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7ef5fefc CF |
1 | /* |
2 | * IS-IS TLV Serializer/Deserializer | |
3 | * | |
4 | * Copyright (C) 2015,2017 Christian Franke | |
5 | * | |
1b3f47d0 OD |
6 | * Copyright (C) 2019 Olivier Dugeon - Orange Labs (for TE and SR) |
7 | * | |
7ef5fefc CF |
8 | * This file is part of FRR. |
9 | * | |
10 | * FRR is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2, or (at your option) any | |
13 | * later version. | |
14 | * | |
15 | * FRR is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with FRR; see the file COPYING. If not, write to the Free | |
22 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
23 | * 02111-1307, USA. | |
24 | */ | |
5b4f4e62 | 25 | |
7ef5fefc | 26 | #include <zebra.h> |
5b4f4e62 | 27 | #include <json-c/json_object.h> |
7ef5fefc | 28 | |
6252100f | 29 | #ifdef CRYPTO_INTERNAL |
7ef5fefc | 30 | #include "md5.h" |
6252100f | 31 | #endif |
7ef5fefc CF |
32 | #include "memory.h" |
33 | #include "stream.h" | |
34 | #include "sbuf.h" | |
1b3f47d0 | 35 | #include "network.h" |
7ef5fefc CF |
36 | |
37 | #include "isisd/isisd.h" | |
841791b6 | 38 | #include "isisd/isis_tlvs.h" |
7ef5fefc CF |
39 | #include "isisd/isis_common.h" |
40 | #include "isisd/isis_mt.h" | |
41 | #include "isisd/isis_misc.h" | |
42 | #include "isisd/isis_adjacency.h" | |
43 | #include "isisd/isis_circuit.h" | |
44 | #include "isisd/isis_pdu.h" | |
45 | #include "isisd/isis_lsp.h" | |
46 | #include "isisd/isis_te.h" | |
26f6acaf | 47 | #include "isisd/isis_sr.h" |
7ef5fefc | 48 | |
bf8d3d6a DL |
49 | DEFINE_MTYPE_STATIC(ISISD, ISIS_TLV, "ISIS TLVs"); |
50 | DEFINE_MTYPE(ISISD, ISIS_SUBTLV, "ISIS Sub-TLVs"); | |
51 | DEFINE_MTYPE_STATIC(ISISD, ISIS_MT_ITEM_LIST, "ISIS MT Item Lists"); | |
7ef5fefc CF |
52 | |
53 | typedef int (*unpack_tlv_func)(enum isis_tlv_context context, uint8_t tlv_type, | |
54 | uint8_t tlv_len, struct stream *s, | |
55 | struct sbuf *log, void *dest, int indent); | |
7ce31bab DS |
56 | typedef int (*pack_item_func)(struct isis_item *item, struct stream *s, |
57 | size_t *min_length); | |
7ef5fefc CF |
58 | typedef void (*free_item_func)(struct isis_item *i); |
59 | typedef int (*unpack_item_func)(uint16_t mtid, uint8_t len, struct stream *s, | |
60 | struct sbuf *log, void *dest, int indent); | |
61 | typedef void (*format_item_func)(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
62 | struct sbuf *buf, struct json_object *json, |
63 | int indent); | |
7ef5fefc CF |
64 | typedef struct isis_item *(*copy_item_func)(struct isis_item *i); |
65 | ||
66 | struct tlv_ops { | |
67 | const char *name; | |
68 | unpack_tlv_func unpack; | |
69 | ||
70 | pack_item_func pack_item; | |
71 | free_item_func free_item; | |
72 | unpack_item_func unpack_item; | |
73 | format_item_func format_item; | |
74 | copy_item_func copy_item; | |
75 | }; | |
76 | ||
77 | enum how_to_pack { | |
78 | ISIS_ITEMS, | |
79 | ISIS_MT_ITEMS, | |
80 | }; | |
81 | ||
82 | struct pack_order_entry { | |
83 | enum isis_tlv_context context; | |
84 | enum isis_tlv_type type; | |
85 | enum how_to_pack how_to_pack; | |
86 | size_t what_to_pack; | |
87 | }; | |
88 | #define PACK_ENTRY(t, h, w) \ | |
89 | { \ | |
90 | .context = ISIS_CONTEXT_LSP, .type = ISIS_TLV_##t, \ | |
91 | .how_to_pack = (h), \ | |
92 | .what_to_pack = offsetof(struct isis_tlvs, w), \ | |
93 | } | |
94 | ||
2b64873d | 95 | static const struct pack_order_entry pack_order[] = { |
7ef5fefc CF |
96 | PACK_ENTRY(OLDSTYLE_REACH, ISIS_ITEMS, oldstyle_reach), |
97 | PACK_ENTRY(LAN_NEIGHBORS, ISIS_ITEMS, lan_neighbor), | |
98 | PACK_ENTRY(LSP_ENTRY, ISIS_ITEMS, lsp_entries), | |
99 | PACK_ENTRY(EXTENDED_REACH, ISIS_ITEMS, extended_reach), | |
100 | PACK_ENTRY(MT_REACH, ISIS_MT_ITEMS, mt_reach), | |
101 | PACK_ENTRY(OLDSTYLE_IP_REACH, ISIS_ITEMS, oldstyle_ip_reach), | |
102 | PACK_ENTRY(OLDSTYLE_IP_REACH_EXT, ISIS_ITEMS, oldstyle_ip_reach_ext), | |
103 | PACK_ENTRY(IPV4_ADDRESS, ISIS_ITEMS, ipv4_address), | |
104 | PACK_ENTRY(IPV6_ADDRESS, ISIS_ITEMS, ipv6_address), | |
173f8887 | 105 | PACK_ENTRY(GLOBAL_IPV6_ADDRESS, ISIS_ITEMS, global_ipv6_address), |
7ef5fefc CF |
106 | PACK_ENTRY(EXTENDED_IP_REACH, ISIS_ITEMS, extended_ip_reach), |
107 | PACK_ENTRY(MT_IP_REACH, ISIS_MT_ITEMS, mt_ip_reach), | |
108 | PACK_ENTRY(IPV6_REACH, ISIS_ITEMS, ipv6_reach), | |
1b3f47d0 OD |
109 | PACK_ENTRY(MT_IPV6_REACH, ISIS_MT_ITEMS, mt_ipv6_reach) |
110 | }; | |
7ef5fefc CF |
111 | |
112 | /* This is a forward definition. The table is actually initialized | |
113 | * in at the bottom. */ | |
2b64873d | 114 | static const struct tlv_ops *const tlv_table[ISIS_CONTEXT_MAX][ISIS_TLV_MAX]; |
7ef5fefc CF |
115 | |
116 | /* End of _ops forward definition. */ | |
117 | ||
118 | /* Prototypes */ | |
119 | static void append_item(struct isis_item_list *dest, struct isis_item *item); | |
1b3f47d0 | 120 | static void init_item_list(struct isis_item_list *items); |
7ef5fefc | 121 | |
a15014f3 PG |
122 | /* For tests/isisd, TLV text requires ipv4-unicast instead of standard */ |
123 | static const char *isis_mtid2str_fake(uint16_t mtid) | |
124 | { | |
125 | if (mtid == ISIS_MT_STANDARD) | |
126 | return "ipv4-unicast"; | |
127 | return isis_mtid2str(mtid); | |
128 | } | |
129 | ||
1b3f47d0 OD |
130 | /* Functions for Extended IS Reachability SubTLVs a.k.a Traffic Engineering */ |
131 | struct isis_ext_subtlvs *isis_alloc_ext_subtlvs(void) | |
132 | { | |
133 | struct isis_ext_subtlvs *ext; | |
134 | ||
135 | ext = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_ext_subtlvs)); | |
136 | init_item_list(&ext->adj_sid); | |
137 | init_item_list(&ext->lan_sid); | |
138 | ||
139 | return ext; | |
140 | } | |
141 | ||
142 | /* | |
173f8887 OD |
143 | * mtid parameter is used to determine if Adjacency is related to IPv4 or IPv6 |
144 | * Multi-Topology. Special 4096 value i.e. first R flag set is used to indicate | |
145 | * that MT is disabled i.e. IS-IS is working with a Single Topology. | |
1b3f47d0 OD |
146 | */ |
147 | static struct isis_ext_subtlvs * | |
173f8887 | 148 | copy_item_ext_subtlvs(struct isis_ext_subtlvs *exts, uint16_t mtid) |
1b3f47d0 OD |
149 | { |
150 | struct isis_ext_subtlvs *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
151 | struct isis_adj_sid *adj; | |
152 | struct isis_lan_adj_sid *lan; | |
153 | ||
173f8887 | 154 | /* Copy the Extended IS main part */ |
1b3f47d0 | 155 | memcpy(rv, exts, sizeof(struct isis_ext_subtlvs)); |
173f8887 OD |
156 | |
157 | /* Disable IPv4 / IPv6 advertisement in function of MTID */ | |
158 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
159 | UNSET_SUBTLV(rv, EXT_LOCAL_ADDR6); | |
160 | UNSET_SUBTLV(rv, EXT_NEIGH_ADDR6); | |
161 | } | |
162 | if (mtid == ISIS_MT_IPV6_UNICAST) { | |
163 | UNSET_SUBTLV(rv, EXT_LOCAL_ADDR); | |
164 | UNSET_SUBTLV(rv, EXT_NEIGH_ADDR); | |
165 | } | |
166 | ||
167 | /* Prepare (LAN)-Adjacency Segment Routing ID*/ | |
1b3f47d0 OD |
168 | init_item_list(&rv->adj_sid); |
169 | init_item_list(&rv->lan_sid); | |
170 | ||
171 | UNSET_SUBTLV(rv, EXT_ADJ_SID); | |
172 | UNSET_SUBTLV(rv, EXT_LAN_ADJ_SID); | |
173 | ||
173f8887 | 174 | /* Copy Adj SID list for IPv4 & IPv6 in function of MT ID */ |
1b3f47d0 OD |
175 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj != NULL; |
176 | adj = adj->next) { | |
173f8887 | 177 | if ((mtid != ISIS_MT_DISABLE) |
1b3f47d0 OD |
178 | && (((mtid == ISIS_MT_IPV4_UNICAST) |
179 | && (adj->family != AF_INET)) | |
180 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
181 | && (adj->family != AF_INET6)))) | |
182 | continue; | |
183 | ||
184 | struct isis_adj_sid *new; | |
185 | ||
186 | new = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_adj_sid)); | |
187 | new->family = adj->family; | |
188 | new->flags = adj->flags; | |
189 | new->weight = adj->weight; | |
190 | new->sid = adj->sid; | |
191 | append_item(&rv->adj_sid, (struct isis_item *)new); | |
192 | SET_SUBTLV(rv, EXT_ADJ_SID); | |
193 | } | |
bd507085 | 194 | |
173f8887 | 195 | /* Same for LAN Adj SID */ |
1b3f47d0 OD |
196 | for (lan = (struct isis_lan_adj_sid *)exts->lan_sid.head; lan != NULL; |
197 | lan = lan->next) { | |
173f8887 | 198 | if ((mtid != ISIS_MT_DISABLE) |
1b3f47d0 OD |
199 | && (((mtid == ISIS_MT_IPV4_UNICAST) |
200 | && (lan->family != AF_INET)) | |
201 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
202 | && (lan->family != AF_INET6)))) | |
203 | continue; | |
204 | ||
205 | struct isis_lan_adj_sid *new; | |
206 | ||
207 | new = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_lan_adj_sid)); | |
208 | new->family = lan->family; | |
209 | new->flags = lan->flags; | |
210 | new->weight = lan->weight; | |
211 | memcpy(new->neighbor_id, lan->neighbor_id, 6); | |
212 | new->sid = lan->sid; | |
213 | append_item(&rv->lan_sid, (struct isis_item *)new); | |
214 | SET_SUBTLV(rv, EXT_LAN_ADJ_SID); | |
215 | } | |
216 | ||
217 | return rv; | |
218 | } | |
219 | ||
220 | /* mtid parameter is used to manage multi-topology i.e. IPv4 / IPv6 */ | |
221 | static void format_item_ext_subtlvs(struct isis_ext_subtlvs *exts, | |
a2cac12a JG |
222 | struct sbuf *buf, struct json_object *json, |
223 | int indent, uint16_t mtid) | |
1b3f47d0 | 224 | { |
a2cac12a JG |
225 | char aux_buf[255]; |
226 | char cnt_buf[255]; | |
1b3f47d0 | 227 | |
1b3f47d0 | 228 | /* Standard metrics */ |
a2cac12a JG |
229 | if (IS_SUBTLV(exts, EXT_ADM_GRP)) { |
230 | if (json) { | |
231 | snprintfrr(aux_buf, sizeof(aux_buf), "0x%x", | |
232 | exts->adm_group); | |
233 | json_object_string_add(json, "adm-group", aux_buf); | |
234 | } else | |
235 | sbuf_push(buf, indent, "Administrative Group: 0x%x\n", | |
236 | exts->adm_group); | |
237 | } | |
1b3f47d0 | 238 | if (IS_SUBTLV(exts, EXT_LLRI)) { |
a2cac12a JG |
239 | if (json) { |
240 | json_object_int_add(json, "link-local-id", | |
241 | exts->local_llri); | |
242 | json_object_int_add(json, "link-remote-id", | |
243 | exts->remote_llri); | |
244 | } else { | |
245 | sbuf_push(buf, indent, "Link Local ID: %u\n", | |
246 | exts->local_llri); | |
247 | sbuf_push(buf, indent, "Link Remote ID: %u\n", | |
248 | exts->remote_llri); | |
249 | } | |
250 | } | |
251 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR)) { | |
252 | if (json) { | |
253 | inet_ntop(AF_INET, &exts->local_addr, aux_buf, | |
254 | sizeof(aux_buf)); | |
255 | json_object_string_add(json, "local-iface-ip", aux_buf); | |
256 | } else | |
257 | sbuf_push(buf, indent, | |
258 | "Local Interface IP Address(es): %pI4\n", | |
259 | &exts->local_addr); | |
260 | } | |
261 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR)) { | |
262 | if (json) { | |
263 | inet_ntop(AF_INET, &exts->neigh_addr, aux_buf, | |
264 | sizeof(aux_buf)); | |
265 | json_object_string_add(json, "remote-iface-ip", | |
266 | aux_buf); | |
267 | } else | |
268 | sbuf_push(buf, indent, | |
269 | "Remote Interface IP Address(es): %pI4\n", | |
270 | &exts->neigh_addr); | |
271 | } | |
272 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR6)) { | |
273 | if (json) { | |
274 | inet_ntop(AF_INET6, &exts->local_addr6, aux_buf, | |
275 | sizeof(aux_buf)); | |
276 | json_object_string_add(json, "local-iface-ipv6", | |
277 | aux_buf); | |
278 | } else | |
279 | sbuf_push(buf, indent, | |
280 | "Local Interface IPv6 Address(es): %pI6\n", | |
281 | &exts->local_addr6); | |
282 | } | |
283 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR6)) { | |
284 | if (json) { | |
285 | inet_ntop(AF_INET6, &exts->neigh_addr6, aux_buf, | |
286 | sizeof(aux_buf)); | |
287 | json_object_string_add(json, "remote-iface-ipv6", | |
288 | aux_buf); | |
289 | } else | |
290 | sbuf_push(buf, indent, | |
291 | "Remote Interface IPv6 Address(es): %pI6\n", | |
292 | &exts->neigh_addr6); | |
293 | } | |
294 | if (IS_SUBTLV(exts, EXT_MAX_BW)) { | |
295 | if (json) { | |
296 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
297 | exts->max_bw); | |
298 | json_object_string_add(json, "max-bandwith-bytes-sec", | |
299 | aux_buf); | |
300 | } else | |
301 | sbuf_push(buf, indent, | |
302 | "Maximum Bandwidth: %g (Bytes/sec)\n", | |
303 | exts->max_bw); | |
304 | } | |
305 | if (IS_SUBTLV(exts, EXT_MAX_RSV_BW)) { | |
306 | if (json) { | |
307 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
308 | exts->max_rsv_bw); | |
309 | json_object_string_add( | |
310 | json, "max-res-bandwith-bytes-sec", aux_buf); | |
311 | } else | |
312 | sbuf_push( | |
313 | buf, indent, | |
314 | "Maximum Reservable Bandwidth: %g (Bytes/sec)\n", | |
315 | exts->max_rsv_bw); | |
316 | } | |
1b3f47d0 | 317 | if (IS_SUBTLV(exts, EXT_UNRSV_BW)) { |
a2cac12a JG |
318 | if (json) { |
319 | struct json_object *unrsv_json; | |
320 | unrsv_json = json_object_new_object(); | |
321 | json_object_object_add(json, "unrsv-bandwith-bytes-sec", | |
322 | unrsv_json); | |
323 | for (int j = 0; j < MAX_CLASS_TYPE; j += 1) { | |
324 | snprintfrr(cnt_buf, sizeof(cnt_buf), "%d", j); | |
325 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
326 | exts->unrsv_bw[j]); | |
327 | json_object_string_add(unrsv_json, cnt_buf, | |
328 | aux_buf); | |
329 | } | |
330 | } else { | |
331 | sbuf_push(buf, indent, "Unreserved Bandwidth:\n"); | |
332 | for (int j = 0; j < MAX_CLASS_TYPE; j += 2) { | |
333 | sbuf_push( | |
334 | buf, indent + 2, | |
335 | "[%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)\n", | |
336 | j, exts->unrsv_bw[j], j + 1, | |
337 | exts->unrsv_bw[j + 1]); | |
338 | } | |
1b3f47d0 OD |
339 | } |
340 | } | |
a2cac12a JG |
341 | if (IS_SUBTLV(exts, EXT_TE_METRIC)) { |
342 | if (json) { | |
343 | json_object_int_add(json, "te-metric", exts->te_metric); | |
344 | } else | |
345 | sbuf_push(buf, indent, | |
346 | "Traffic Engineering Metric: %u\n", | |
347 | exts->te_metric); | |
348 | } | |
349 | if (IS_SUBTLV(exts, EXT_RMT_AS)) { | |
350 | if (json) { | |
351 | json_object_int_add(json, "inter-as-te-remote-as", | |
352 | exts->remote_as); | |
353 | } else | |
354 | sbuf_push(buf, indent, | |
355 | "Inter-AS TE Remote AS number: %u\n", | |
356 | exts->remote_as); | |
357 | } | |
358 | if (IS_SUBTLV(exts, EXT_RMT_IP)) { | |
359 | if (json) { | |
360 | inet_ntop(AF_INET6, &exts->remote_ip, aux_buf, | |
361 | sizeof(aux_buf)); | |
362 | json_object_string_add( | |
363 | json, "inter-as-te-remote-asbr-ip", aux_buf); | |
364 | } else | |
365 | sbuf_push(buf, indent, | |
366 | "Inter-AS TE Remote ASBR IP address: %pI4\n", | |
367 | &exts->remote_ip); | |
368 | } | |
1b3f47d0 | 369 | /* Extended metrics */ |
a2cac12a JG |
370 | if (IS_SUBTLV(exts, EXT_DELAY)) { |
371 | if (json) { | |
372 | struct json_object *avg_json; | |
373 | avg_json = json_object_new_object(); | |
374 | json_object_object_add(json, "avg-delay", avg_json); | |
375 | json_object_string_add(avg_json, "delay", | |
376 | IS_ANORMAL(exts->delay) | |
377 | ? "Anomalous" | |
378 | : "Normal"); | |
379 | json_object_int_add(avg_json, "micro-sec", exts->delay); | |
380 | } else | |
381 | sbuf_push(buf, indent, | |
382 | "%s Average Link Delay: %u (micro-sec)\n", | |
383 | IS_ANORMAL(exts->delay) ? "Anomalous" | |
384 | : "Normal", | |
385 | exts->delay); | |
386 | } | |
1b3f47d0 | 387 | if (IS_SUBTLV(exts, EXT_MM_DELAY)) { |
a2cac12a JG |
388 | if (json) { |
389 | struct json_object *avg_json; | |
390 | avg_json = json_object_new_object(); | |
391 | json_object_object_add(json, "max-min-delay", avg_json); | |
392 | json_object_string_add(avg_json, "delay", | |
393 | IS_ANORMAL(exts->min_delay) | |
394 | ? "Anomalous" | |
395 | : "Normal"); | |
396 | snprintfrr(aux_buf, sizeof(aux_buf), "%u / %u", | |
397 | exts->min_delay & TE_EXT_MASK, | |
398 | exts->max_delay & TE_EXT_MASK); | |
399 | json_object_string_add(avg_json, "micro-sec", aux_buf); | |
400 | ||
401 | } else | |
402 | sbuf_push( | |
403 | buf, indent, | |
404 | "%s Min/Max Link Delay: %u / %u (micro-sec)\n", | |
405 | IS_ANORMAL(exts->min_delay) ? "Anomalous" | |
406 | : "Normal", | |
407 | exts->min_delay & TE_EXT_MASK, | |
408 | exts->max_delay & TE_EXT_MASK); | |
1b3f47d0 OD |
409 | } |
410 | if (IS_SUBTLV(exts, EXT_DELAY_VAR)) { | |
a2cac12a JG |
411 | if (json) { |
412 | json_object_int_add(json, "delay-variation-micro-sec", | |
413 | exts->delay_var & TE_EXT_MASK); | |
414 | } else | |
415 | sbuf_push(buf, indent, | |
416 | "Delay Variation: %u (micro-sec)\n", | |
417 | exts->delay_var & TE_EXT_MASK); | |
418 | } | |
419 | if (IS_SUBTLV(exts, EXT_PKT_LOSS)) { | |
420 | if (json) { | |
421 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
422 | (float)((exts->pkt_loss & TE_EXT_MASK) * | |
423 | LOSS_PRECISION)); | |
424 | struct json_object *link_json; | |
425 | link_json = json_object_new_object(); | |
426 | json_object_object_add(json, "link-packet-loss", | |
427 | link_json); | |
428 | json_object_string_add(link_json, "loss", | |
429 | IS_ANORMAL(exts->pkt_loss) | |
430 | ? "Anomalous" | |
431 | : "Normal"); | |
432 | json_object_string_add(link_json, "percentaje", | |
433 | aux_buf); | |
434 | } else | |
435 | sbuf_push(buf, indent, "%s Link Packet Loss: %g (%%)\n", | |
436 | IS_ANORMAL(exts->pkt_loss) ? "Anomalous" | |
437 | : "Normal", | |
438 | (float)((exts->pkt_loss & TE_EXT_MASK) * | |
439 | LOSS_PRECISION)); | |
440 | } | |
441 | if (IS_SUBTLV(exts, EXT_RES_BW)) { | |
442 | if (json) { | |
443 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
444 | (exts->res_bw)); | |
445 | json_object_string_add(json, | |
446 | "unidir-residual-band-bytes-sec", | |
447 | aux_buf); | |
448 | } else | |
449 | sbuf_push( | |
450 | buf, indent, | |
451 | "Unidir. Residual Bandwidth: %g (Bytes/sec)\n", | |
452 | exts->res_bw); | |
453 | } | |
454 | if (IS_SUBTLV(exts, EXT_AVA_BW)) { | |
455 | if (json) { | |
456 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
457 | (exts->ava_bw)); | |
458 | json_object_string_add( | |
459 | json, "unidir-available-band-bytes-sec", | |
460 | aux_buf); | |
461 | } else | |
462 | sbuf_push( | |
463 | buf, indent, | |
464 | "Unidir. Available Bandwidth: %g (Bytes/sec)\n", | |
465 | exts->ava_bw); | |
466 | } | |
467 | if (IS_SUBTLV(exts, EXT_USE_BW)) { | |
468 | if (json) { | |
469 | snprintfrr(aux_buf, sizeof(aux_buf), "%g", | |
470 | (exts->use_bw)); | |
471 | json_object_string_add(json, | |
472 | "unidir-utilized-band-bytes-sec", | |
473 | aux_buf); | |
474 | } else | |
475 | sbuf_push( | |
476 | buf, indent, | |
477 | "Unidir. Utilized Bandwidth: %g (Bytes/sec)\n", | |
478 | exts->use_bw); | |
479 | } | |
f2333421 | 480 | /* Segment Routing Adjacency as per RFC8667 section #2.2.1 */ |
1b3f47d0 OD |
481 | if (IS_SUBTLV(exts, EXT_ADJ_SID)) { |
482 | struct isis_adj_sid *adj; | |
483 | ||
a2cac12a JG |
484 | if (json) { |
485 | struct json_object *arr_adj_json, *flags_json; | |
486 | arr_adj_json = json_object_new_array(); | |
487 | json_object_object_add(json, "adj-sid", arr_adj_json); | |
488 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; | |
489 | adj; adj = adj->next) { | |
490 | snprintfrr(cnt_buf, sizeof(cnt_buf), "%d", | |
491 | adj->sid); | |
492 | flags_json = json_object_new_object(); | |
493 | json_object_int_add(flags_json, "sid", | |
494 | adj->sid); | |
495 | json_object_int_add(flags_json, "weight", | |
496 | adj->weight); | |
497 | json_object_string_add( | |
498 | flags_json, "flag-f", | |
499 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG | |
500 | ? "1" | |
501 | : "0"); | |
502 | json_object_string_add( | |
503 | flags_json, "flag-b", | |
504 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG | |
505 | ? "1" | |
506 | : "0"); | |
507 | json_object_string_add( | |
508 | flags_json, "flag-v", | |
509 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
510 | ? "1" | |
511 | : "0"); | |
512 | json_object_string_add( | |
513 | flags_json, "flag-l", | |
514 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG | |
515 | ? "1" | |
516 | : "0"); | |
517 | json_object_string_add( | |
518 | flags_json, "flag-s", | |
519 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG | |
520 | ? "1" | |
521 | : "0"); | |
522 | json_object_string_add( | |
523 | flags_json, "flag-p", | |
524 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
525 | ? "1" | |
526 | : "0"); | |
527 | json_object_array_add(arr_adj_json, flags_json); | |
528 | } | |
529 | } else | |
530 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; | |
531 | adj; adj = adj->next) { | |
532 | sbuf_push( | |
533 | buf, indent, | |
534 | "Adjacency-SID: %u, Weight: %hhu, Flags: F:%c B:%c, V:%c, L:%c, S:%c, P:%c\n", | |
535 | adj->sid, adj->weight, | |
536 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG | |
537 | ? '1' | |
538 | : '0', | |
539 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG | |
540 | ? '1' | |
541 | : '0', | |
542 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
543 | ? '1' | |
544 | : '0', | |
545 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG | |
546 | ? '1' | |
547 | : '0', | |
548 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG | |
549 | ? '1' | |
550 | : '0', | |
551 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
552 | ? '1' | |
553 | : '0'); | |
554 | } | |
1b3f47d0 | 555 | } |
f2333421 | 556 | /* Segment Routing LAN-Adjacency as per RFC8667 section #2.2.2 */ |
1b3f47d0 OD |
557 | if (IS_SUBTLV(exts, EXT_LAN_ADJ_SID)) { |
558 | struct isis_lan_adj_sid *lan; | |
a2cac12a JG |
559 | if (json) { |
560 | struct json_object *arr_adj_json, *flags_json; | |
561 | arr_adj_json = json_object_new_array(); | |
562 | json_object_object_add(json, "lan-adj-sid", | |
563 | arr_adj_json); | |
564 | for (lan = (struct isis_lan_adj_sid *) | |
565 | exts->adj_sid.head; | |
566 | lan; lan = lan->next) { | |
567 | if (((mtid == ISIS_MT_IPV4_UNICAST) && | |
568 | (lan->family != AF_INET)) || | |
569 | ((mtid == ISIS_MT_IPV6_UNICAST) && | |
570 | (lan->family != AF_INET6))) | |
571 | continue; | |
572 | snprintfrr(cnt_buf, sizeof(cnt_buf), "%d", | |
573 | lan->sid); | |
574 | flags_json = json_object_new_object(); | |
575 | json_object_int_add(flags_json, "sid", | |
576 | lan->sid); | |
577 | json_object_int_add(flags_json, "weight", | |
578 | lan->weight); | |
579 | json_object_string_add( | |
580 | flags_json, "flag-f", | |
581 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG | |
582 | ? "1" | |
583 | : "0"); | |
584 | json_object_string_add( | |
585 | flags_json, "flag-b", | |
586 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG | |
587 | ? "1" | |
588 | : "0"); | |
589 | json_object_string_add( | |
590 | flags_json, "flag-v", | |
591 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
592 | ? "1" | |
593 | : "0"); | |
594 | json_object_string_add( | |
595 | flags_json, "flag-l", | |
596 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG | |
597 | ? "1" | |
598 | : "0"); | |
599 | json_object_string_add( | |
600 | flags_json, "flag-s", | |
601 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG | |
602 | ? "1" | |
603 | : "0"); | |
604 | json_object_string_add( | |
605 | flags_json, "flag-p", | |
606 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
607 | ? "1" | |
608 | : "0"); | |
609 | json_object_array_add(arr_adj_json, flags_json); | |
610 | } | |
611 | } else | |
612 | ||
613 | for (lan = (struct isis_lan_adj_sid *) | |
614 | exts->lan_sid.head; | |
615 | lan; lan = lan->next) { | |
616 | if (((mtid == ISIS_MT_IPV4_UNICAST) && | |
617 | (lan->family != AF_INET)) || | |
618 | ((mtid == ISIS_MT_IPV6_UNICAST) && | |
619 | (lan->family != AF_INET6))) | |
620 | continue; | |
621 | sbuf_push( | |
622 | buf, indent, | |
623 | "Lan-Adjacency-SID: %u, Weight: %hhu, Flags: F:%c B:%c, V:%c, L:%c, S:%c, P:%c\n" | |
624 | " Neighbor-ID: %s\n", | |
625 | lan->sid, lan->weight, | |
626 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG | |
627 | ? '1' | |
628 | : '0', | |
629 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG | |
630 | ? '1' | |
631 | : '0', | |
632 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
633 | ? '1' | |
634 | : '0', | |
635 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG | |
636 | ? '1' | |
637 | : '0', | |
638 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG | |
639 | ? '1' | |
640 | : '0', | |
641 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
642 | ? '1' | |
643 | : '0', | |
644 | isis_format_id(lan->neighbor_id, 6)); | |
645 | } | |
1b3f47d0 OD |
646 | } |
647 | } | |
648 | ||
649 | static void free_item_ext_subtlvs(struct isis_ext_subtlvs *exts) | |
650 | { | |
651 | struct isis_item *item, *next_item; | |
652 | ||
653 | /* First, free Adj SID and LAN Adj SID list if needed */ | |
654 | for (item = exts->adj_sid.head; item; item = next_item) { | |
655 | next_item = item->next; | |
656 | XFREE(MTYPE_ISIS_SUBTLV, item); | |
657 | } | |
658 | for (item = exts->lan_sid.head; item; item = next_item) { | |
659 | next_item = item->next; | |
660 | XFREE(MTYPE_ISIS_SUBTLV, item); | |
661 | } | |
662 | XFREE(MTYPE_ISIS_SUBTLV, exts); | |
663 | } | |
664 | ||
665 | static int pack_item_ext_subtlvs(struct isis_ext_subtlvs *exts, | |
7ce31bab | 666 | struct stream *s, size_t *min_len) |
1b3f47d0 OD |
667 | { |
668 | uint8_t size; | |
669 | ||
7ce31bab DS |
670 | if (STREAM_WRITEABLE(s) < ISIS_SUBTLV_MAX_SIZE) { |
671 | *min_len = ISIS_SUBTLV_MAX_SIZE; | |
1b3f47d0 | 672 | return 1; |
7ce31bab | 673 | } |
1b3f47d0 OD |
674 | |
675 | if (IS_SUBTLV(exts, EXT_ADM_GRP)) { | |
676 | stream_putc(s, ISIS_SUBTLV_ADMIN_GRP); | |
677 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
678 | stream_putl(s, exts->adm_group); | |
679 | } | |
680 | if (IS_SUBTLV(exts, EXT_LLRI)) { | |
681 | stream_putc(s, ISIS_SUBTLV_LLRI); | |
682 | stream_putc(s, ISIS_SUBTLV_LLRI_SIZE); | |
683 | stream_putl(s, exts->local_llri); | |
684 | stream_putl(s, exts->remote_llri); | |
685 | } | |
686 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR)) { | |
687 | stream_putc(s, ISIS_SUBTLV_LOCAL_IPADDR); | |
688 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
689 | stream_put(s, &exts->local_addr.s_addr, 4); | |
690 | } | |
691 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR)) { | |
692 | stream_putc(s, ISIS_SUBTLV_RMT_IPADDR); | |
693 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
694 | stream_put(s, &exts->neigh_addr.s_addr, 4); | |
695 | } | |
696 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR6)) { | |
697 | stream_putc(s, ISIS_SUBTLV_LOCAL_IPADDR6); | |
698 | stream_putc(s, ISIS_SUBTLV_IPV6_ADDR_SIZE); | |
699 | stream_put(s, &exts->local_addr6, 16); | |
700 | } | |
701 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR6)) { | |
702 | stream_putc(s, ISIS_SUBTLV_RMT_IPADDR6); | |
703 | stream_putc(s, ISIS_SUBTLV_IPV6_ADDR_SIZE); | |
704 | stream_put(s, &exts->neigh_addr6, 16); | |
705 | } | |
706 | if (IS_SUBTLV(exts, EXT_MAX_BW)) { | |
707 | stream_putc(s, ISIS_SUBTLV_MAX_BW); | |
708 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
709 | stream_putf(s, exts->max_bw); | |
710 | } | |
711 | if (IS_SUBTLV(exts, EXT_MAX_RSV_BW)) { | |
712 | stream_putc(s, ISIS_SUBTLV_MAX_RSV_BW); | |
713 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
714 | stream_putf(s, exts->max_rsv_bw); | |
715 | } | |
716 | if (IS_SUBTLV(exts, EXT_UNRSV_BW)) { | |
717 | stream_putc(s, ISIS_SUBTLV_UNRSV_BW); | |
718 | stream_putc(s, ISIS_SUBTLV_UNRSV_BW_SIZE); | |
719 | for (int j = 0; j < MAX_CLASS_TYPE; j++) | |
720 | stream_putf(s, exts->unrsv_bw[j]); | |
721 | } | |
722 | if (IS_SUBTLV(exts, EXT_TE_METRIC)) { | |
723 | stream_putc(s, ISIS_SUBTLV_TE_METRIC); | |
724 | stream_putc(s, ISIS_SUBTLV_TE_METRIC_SIZE); | |
725 | stream_put3(s, exts->te_metric); | |
726 | } | |
727 | if (IS_SUBTLV(exts, EXT_RMT_AS)) { | |
728 | stream_putc(s, ISIS_SUBTLV_RAS); | |
729 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
730 | stream_putl(s, exts->remote_as); | |
731 | } | |
732 | if (IS_SUBTLV(exts, EXT_RMT_IP)) { | |
733 | stream_putc(s, ISIS_SUBTLV_RIP); | |
734 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
735 | stream_put(s, &exts->remote_ip.s_addr, 4); | |
736 | } | |
737 | if (IS_SUBTLV(exts, EXT_DELAY)) { | |
738 | stream_putc(s, ISIS_SUBTLV_AV_DELAY); | |
739 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
740 | stream_putl(s, exts->delay); | |
741 | } | |
742 | if (IS_SUBTLV(exts, EXT_MM_DELAY)) { | |
743 | stream_putc(s, ISIS_SUBTLV_MM_DELAY); | |
744 | stream_putc(s, ISIS_SUBTLV_MM_DELAY_SIZE); | |
745 | stream_putl(s, exts->min_delay); | |
746 | stream_putl(s, exts->max_delay); | |
747 | } | |
748 | if (IS_SUBTLV(exts, EXT_DELAY_VAR)) { | |
749 | stream_putc(s, ISIS_SUBTLV_DELAY_VAR); | |
750 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
751 | stream_putl(s, exts->delay_var); | |
752 | } | |
753 | if (IS_SUBTLV(exts, EXT_PKT_LOSS)) { | |
754 | stream_putc(s, ISIS_SUBTLV_PKT_LOSS); | |
755 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
756 | stream_putl(s, exts->pkt_loss); | |
757 | } | |
758 | if (IS_SUBTLV(exts, EXT_RES_BW)) { | |
759 | stream_putc(s, ISIS_SUBTLV_RES_BW); | |
760 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
761 | stream_putf(s, exts->res_bw); | |
762 | } | |
763 | if (IS_SUBTLV(exts, EXT_AVA_BW)) { | |
764 | stream_putc(s, ISIS_SUBTLV_AVA_BW); | |
765 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
766 | stream_putf(s, exts->ava_bw); | |
767 | } | |
768 | if (IS_SUBTLV(exts, EXT_USE_BW)) { | |
769 | stream_putc(s, ISIS_SUBTLV_USE_BW); | |
770 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
771 | stream_putf(s, exts->use_bw); | |
772 | } | |
f2333421 | 773 | /* Segment Routing Adjacency as per RFC8667 section #2.2.1 */ |
1b3f47d0 OD |
774 | if (IS_SUBTLV(exts, EXT_ADJ_SID)) { |
775 | struct isis_adj_sid *adj; | |
776 | ||
777 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj; | |
778 | adj = adj->next) { | |
779 | stream_putc(s, ISIS_SUBTLV_ADJ_SID); | |
780 | size = ISIS_SUBTLV_ADJ_SID_SIZE; | |
781 | if (!(adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG)) | |
782 | size++; | |
783 | stream_putc(s, size); | |
784 | stream_putc(s, adj->flags); | |
785 | stream_putc(s, adj->weight); | |
786 | if (adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
787 | stream_put3(s, adj->sid); | |
788 | else | |
789 | stream_putl(s, adj->sid); | |
790 | ||
791 | } | |
792 | } | |
f2333421 | 793 | /* Segment Routing LAN-Adjacency as per RFC8667 section #2.2.2 */ |
1b3f47d0 OD |
794 | if (IS_SUBTLV(exts, EXT_LAN_ADJ_SID)) { |
795 | struct isis_lan_adj_sid *lan; | |
796 | ||
797 | for (lan = (struct isis_lan_adj_sid *)exts->lan_sid.head; lan; | |
798 | lan = lan->next) { | |
799 | stream_putc(s, ISIS_SUBTLV_LAN_ADJ_SID); | |
800 | size = ISIS_SUBTLV_LAN_ADJ_SID_SIZE; | |
801 | if (!(lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG)) | |
802 | size++; | |
803 | stream_putc(s, size); | |
804 | stream_putc(s, lan->flags); | |
805 | stream_putc(s, lan->weight); | |
806 | stream_put(s, lan->neighbor_id, 6); | |
807 | if (lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
808 | stream_put3(s, lan->sid); | |
809 | else | |
810 | stream_putl(s, lan->sid); | |
811 | } | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | static int unpack_item_ext_subtlvs(uint16_t mtid, uint8_t len, struct stream *s, | |
818 | struct sbuf *log, void *dest, int indent) | |
819 | { | |
820 | uint8_t sum = 0; | |
821 | uint8_t subtlv_type; | |
822 | uint8_t subtlv_len; | |
823 | ||
824 | struct isis_extended_reach *rv = dest; | |
825 | struct isis_ext_subtlvs *exts = isis_alloc_ext_subtlvs(); | |
826 | ||
827 | rv->subtlvs = exts; | |
828 | ||
829 | /* | |
830 | * Parse subTLVs until reach subTLV length | |
831 | * Check that it remains at least 2 bytes: subTLV Type & Length | |
832 | */ | |
833 | while (len > sum + 2) { | |
834 | /* Read SubTLV Type and Length */ | |
835 | subtlv_type = stream_getc(s); | |
836 | subtlv_len = stream_getc(s); | |
17b0839b JV |
837 | if (subtlv_len > len - sum - ISIS_SUBTLV_HDR_SIZE) { |
838 | sbuf_push( | |
839 | log, indent, | |
840 | "TLV %hhu: Available data %u is less than TLV size %u !\n", | |
841 | subtlv_type, len - sum - ISIS_SUBTLV_HDR_SIZE, | |
842 | subtlv_len); | |
1b3f47d0 OD |
843 | return 1; |
844 | } | |
845 | ||
846 | switch (subtlv_type) { | |
847 | /* Standard Metric as defined in RFC5305 */ | |
848 | case ISIS_SUBTLV_ADMIN_GRP: | |
849 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
850 | sbuf_push(log, indent, | |
851 | "TLV size does not match expected size for Administrative Group!\n"); | |
17b0839b | 852 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
853 | } else { |
854 | exts->adm_group = stream_getl(s); | |
855 | SET_SUBTLV(exts, EXT_ADM_GRP); | |
856 | } | |
857 | break; | |
858 | case ISIS_SUBTLV_LLRI: | |
859 | if (subtlv_len != ISIS_SUBTLV_LLRI_SIZE) { | |
860 | sbuf_push(log, indent, | |
861 | "TLV size does not match expected size for Link ID!\n"); | |
17b0839b | 862 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
863 | } else { |
864 | exts->local_llri = stream_getl(s); | |
865 | exts->remote_llri = stream_getl(s); | |
866 | SET_SUBTLV(exts, EXT_LLRI); | |
867 | } | |
868 | break; | |
869 | case ISIS_SUBTLV_LOCAL_IPADDR: | |
870 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
871 | sbuf_push(log, indent, | |
872 | "TLV size does not match expected size for Local IP address!\n"); | |
17b0839b | 873 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
874 | } else { |
875 | stream_get(&exts->local_addr.s_addr, s, 4); | |
876 | SET_SUBTLV(exts, EXT_LOCAL_ADDR); | |
877 | } | |
878 | break; | |
879 | case ISIS_SUBTLV_RMT_IPADDR: | |
880 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
881 | sbuf_push(log, indent, | |
882 | "TLV size does not match expected size for Remote IP address!\n"); | |
17b0839b | 883 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
884 | } else { |
885 | stream_get(&exts->neigh_addr.s_addr, s, 4); | |
886 | SET_SUBTLV(exts, EXT_NEIGH_ADDR); | |
887 | } | |
888 | break; | |
889 | case ISIS_SUBTLV_LOCAL_IPADDR6: | |
890 | if (subtlv_len != ISIS_SUBTLV_IPV6_ADDR_SIZE) { | |
891 | sbuf_push(log, indent, | |
892 | "TLV size does not match expected size for Local IPv6 address!\n"); | |
17b0839b | 893 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
894 | } else { |
895 | stream_get(&exts->local_addr6, s, 16); | |
896 | SET_SUBTLV(exts, EXT_LOCAL_ADDR6); | |
897 | } | |
898 | break; | |
899 | case ISIS_SUBTLV_RMT_IPADDR6: | |
900 | if (subtlv_len != ISIS_SUBTLV_IPV6_ADDR_SIZE) { | |
901 | sbuf_push(log, indent, | |
902 | "TLV size does not match expected size for Remote IPv6 address!\n"); | |
17b0839b | 903 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
904 | } else { |
905 | stream_get(&exts->neigh_addr6, s, 16); | |
906 | SET_SUBTLV(exts, EXT_NEIGH_ADDR6); | |
907 | } | |
908 | break; | |
909 | case ISIS_SUBTLV_MAX_BW: | |
910 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
911 | sbuf_push(log, indent, | |
912 | "TLV size does not match expected size for Maximum Bandwidth!\n"); | |
17b0839b | 913 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
914 | } else { |
915 | exts->max_bw = stream_getf(s); | |
916 | SET_SUBTLV(exts, EXT_MAX_BW); | |
917 | } | |
918 | break; | |
919 | case ISIS_SUBTLV_MAX_RSV_BW: | |
920 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
921 | sbuf_push(log, indent, | |
922 | "TLV size does not match expected size for Maximum Reservable Bandwidth!\n"); | |
17b0839b | 923 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
924 | } else { |
925 | exts->max_rsv_bw = stream_getf(s); | |
926 | SET_SUBTLV(exts, EXT_MAX_RSV_BW); | |
927 | } | |
928 | break; | |
929 | case ISIS_SUBTLV_UNRSV_BW: | |
930 | if (subtlv_len != ISIS_SUBTLV_UNRSV_BW_SIZE) { | |
931 | sbuf_push(log, indent, | |
932 | "TLV size does not match expected size for Unreserved Bandwidth!\n"); | |
17b0839b | 933 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
934 | } else { |
935 | for (int i = 0; i < MAX_CLASS_TYPE; i++) | |
936 | exts->unrsv_bw[i] = stream_getf(s); | |
937 | SET_SUBTLV(exts, EXT_UNRSV_BW); | |
938 | } | |
939 | break; | |
940 | case ISIS_SUBTLV_TE_METRIC: | |
941 | if (subtlv_len != ISIS_SUBTLV_TE_METRIC_SIZE) { | |
942 | sbuf_push(log, indent, | |
943 | "TLV size does not match expected size for Traffic Engineering Metric!\n"); | |
17b0839b | 944 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
945 | } else { |
946 | exts->te_metric = stream_get3(s); | |
947 | SET_SUBTLV(exts, EXT_TE_METRIC); | |
948 | } | |
949 | break; | |
950 | case ISIS_SUBTLV_RAS: | |
951 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
952 | sbuf_push(log, indent, | |
953 | "TLV size does not match expected size for Remote AS number!\n"); | |
17b0839b | 954 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
955 | } else { |
956 | exts->remote_as = stream_getl(s); | |
957 | SET_SUBTLV(exts, EXT_RMT_AS); | |
958 | } | |
959 | break; | |
960 | case ISIS_SUBTLV_RIP: | |
961 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
962 | sbuf_push(log, indent, | |
963 | "TLV size does not match expected size for Remote ASBR IP Address!\n"); | |
17b0839b | 964 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
965 | } else { |
966 | stream_get(&exts->remote_ip.s_addr, s, 4); | |
967 | SET_SUBTLV(exts, EXT_RMT_IP); | |
968 | } | |
969 | break; | |
970 | /* Extended Metrics as defined in RFC 7810 */ | |
971 | case ISIS_SUBTLV_AV_DELAY: | |
972 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
973 | sbuf_push(log, indent, | |
974 | "TLV size does not match expected size for Average Link Delay!\n"); | |
17b0839b | 975 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
976 | } else { |
977 | exts->delay = stream_getl(s); | |
978 | SET_SUBTLV(exts, EXT_DELAY); | |
979 | } | |
980 | break; | |
981 | case ISIS_SUBTLV_MM_DELAY: | |
17b0839b | 982 | if (subtlv_len != ISIS_SUBTLV_MM_DELAY_SIZE) { |
1b3f47d0 OD |
983 | sbuf_push(log, indent, |
984 | "TLV size does not match expected size for Min/Max Link Delay!\n"); | |
17b0839b | 985 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
986 | } else { |
987 | exts->min_delay = stream_getl(s); | |
988 | exts->max_delay = stream_getl(s); | |
989 | SET_SUBTLV(exts, EXT_MM_DELAY); | |
990 | } | |
991 | break; | |
992 | case ISIS_SUBTLV_DELAY_VAR: | |
993 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
994 | sbuf_push(log, indent, | |
995 | "TLV size does not match expected size for Delay Variation!\n"); | |
17b0839b | 996 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
997 | } else { |
998 | exts->delay_var = stream_getl(s); | |
999 | SET_SUBTLV(exts, EXT_DELAY_VAR); | |
1000 | } | |
1001 | break; | |
1002 | case ISIS_SUBTLV_PKT_LOSS: | |
1003 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
1004 | sbuf_push(log, indent, | |
1005 | "TLV size does not match expected size for Link Packet Loss!\n"); | |
17b0839b | 1006 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1007 | } else { |
1008 | exts->pkt_loss = stream_getl(s); | |
1009 | SET_SUBTLV(exts, EXT_PKT_LOSS); | |
1010 | } | |
1011 | break; | |
1012 | case ISIS_SUBTLV_RES_BW: | |
1013 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
1014 | sbuf_push(log, indent, | |
1015 | "TLV size does not match expected size for Unidirectional Residual Bandwidth!\n"); | |
17b0839b | 1016 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1017 | } else { |
1018 | exts->res_bw = stream_getf(s); | |
1019 | SET_SUBTLV(exts, EXT_RES_BW); | |
1020 | } | |
1021 | break; | |
1022 | case ISIS_SUBTLV_AVA_BW: | |
1023 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
1024 | sbuf_push(log, indent, | |
1025 | "TLV size does not match expected size for Unidirectional Available Bandwidth!\n"); | |
17b0839b | 1026 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1027 | } else { |
1028 | exts->ava_bw = stream_getf(s); | |
1029 | SET_SUBTLV(exts, EXT_AVA_BW); | |
1030 | } | |
1031 | break; | |
1032 | case ISIS_SUBTLV_USE_BW: | |
1033 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
1034 | sbuf_push(log, indent, | |
1035 | "TLV size does not match expected size for Unidirectional Utilized Bandwidth!\n"); | |
17b0839b | 1036 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1037 | } else { |
1038 | exts->use_bw = stream_getf(s); | |
1039 | SET_SUBTLV(exts, EXT_USE_BW); | |
1040 | } | |
1041 | break; | |
f2333421 | 1042 | /* Segment Routing Adjacency as per RFC8667 section #2.2.1 */ |
1b3f47d0 OD |
1043 | case ISIS_SUBTLV_ADJ_SID: |
1044 | if (subtlv_len != ISIS_SUBTLV_ADJ_SID_SIZE | |
1045 | && subtlv_len != ISIS_SUBTLV_ADJ_SID_SIZE + 1) { | |
1046 | sbuf_push(log, indent, | |
1047 | "TLV size does not match expected size for Adjacency SID!\n"); | |
17b0839b | 1048 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1049 | } else { |
1050 | struct isis_adj_sid *adj; | |
1051 | ||
1052 | adj = XCALLOC(MTYPE_ISIS_SUBTLV, | |
1053 | sizeof(struct isis_adj_sid)); | |
1054 | adj->flags = stream_getc(s); | |
1055 | adj->weight = stream_getc(s); | |
17b0839b JV |
1056 | if (adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG |
1057 | && subtlv_len != ISIS_SUBTLV_ADJ_SID_SIZE) { | |
1058 | sbuf_push( | |
1059 | log, indent, | |
1060 | "TLV size does not match expected size for Adjacency SID!\n"); | |
1061 | stream_forward_getp(s, subtlv_len - 2); | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | if (!(adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
1066 | && subtlv_len | |
1067 | != ISIS_SUBTLV_ADJ_SID_SIZE | |
1068 | + 1) { | |
1069 | sbuf_push( | |
1070 | log, indent, | |
1071 | "TLV size does not match expected size for Adjacency SID!\n"); | |
1072 | stream_forward_getp(s, subtlv_len - 2); | |
1073 | break; | |
1074 | } | |
1075 | ||
1b3f47d0 OD |
1076 | if (adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) { |
1077 | adj->sid = stream_get3(s); | |
1078 | adj->sid &= MPLS_LABEL_VALUE_MASK; | |
1079 | } else { | |
1080 | adj->sid = stream_getl(s); | |
1081 | } | |
1082 | if (mtid == ISIS_MT_IPV4_UNICAST) | |
1083 | adj->family = AF_INET; | |
1084 | if (mtid == ISIS_MT_IPV6_UNICAST) | |
1085 | adj->family = AF_INET6; | |
1086 | append_item(&exts->adj_sid, | |
1087 | (struct isis_item *)adj); | |
1088 | SET_SUBTLV(exts, EXT_ADJ_SID); | |
1089 | } | |
1090 | break; | |
f2333421 | 1091 | /* Segment Routing LAN-Adjacency as per RFC8667 section 2.2.2 */ |
1b3f47d0 OD |
1092 | case ISIS_SUBTLV_LAN_ADJ_SID: |
1093 | if (subtlv_len != ISIS_SUBTLV_LAN_ADJ_SID_SIZE | |
1094 | && subtlv_len != ISIS_SUBTLV_LAN_ADJ_SID_SIZE + 1) { | |
1095 | sbuf_push(log, indent, | |
1096 | "TLV size does not match expected size for LAN-Adjacency SID!\n"); | |
17b0839b | 1097 | stream_forward_getp(s, subtlv_len); |
1b3f47d0 OD |
1098 | } else { |
1099 | struct isis_lan_adj_sid *lan; | |
1100 | ||
1101 | lan = XCALLOC(MTYPE_ISIS_SUBTLV, | |
1102 | sizeof(struct isis_lan_adj_sid)); | |
1103 | lan->flags = stream_getc(s); | |
1104 | lan->weight = stream_getc(s); | |
1105 | stream_get(&(lan->neighbor_id), s, | |
1106 | ISIS_SYS_ID_LEN); | |
17b0839b JV |
1107 | |
1108 | if (lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
1109 | && subtlv_len | |
1110 | != ISIS_SUBTLV_LAN_ADJ_SID_SIZE) { | |
1111 | sbuf_push( | |
1112 | log, indent, | |
1113 | "TLV size does not match expected size for LAN-Adjacency SID!\n"); | |
1114 | stream_forward_getp( | |
1115 | s, subtlv_len - 2 | |
1116 | - ISIS_SYS_ID_LEN); | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | if (!(lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
1121 | && subtlv_len | |
1122 | != ISIS_SUBTLV_LAN_ADJ_SID_SIZE | |
1123 | + 1) { | |
1124 | sbuf_push( | |
1125 | log, indent, | |
1126 | "TLV size does not match expected size for LAN-Adjacency SID!\n"); | |
1127 | stream_forward_getp( | |
1128 | s, subtlv_len - 2 | |
1129 | - ISIS_SYS_ID_LEN); | |
1130 | break; | |
1131 | } | |
1132 | ||
1b3f47d0 OD |
1133 | if (lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) { |
1134 | lan->sid = stream_get3(s); | |
1135 | lan->sid &= MPLS_LABEL_VALUE_MASK; | |
1136 | } else { | |
1137 | lan->sid = stream_getl(s); | |
1138 | } | |
1139 | if (mtid == ISIS_MT_IPV4_UNICAST) | |
1140 | lan->family = AF_INET; | |
1141 | if (mtid == ISIS_MT_IPV6_UNICAST) | |
1142 | lan->family = AF_INET6; | |
1143 | append_item(&exts->lan_sid, | |
1144 | (struct isis_item *)lan); | |
1145 | SET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
1146 | } | |
1147 | break; | |
1148 | default: | |
1149 | /* Skip unknown TLV */ | |
1150 | stream_forward_getp(s, subtlv_len); | |
1151 | break; | |
1152 | } | |
1153 | sum += subtlv_len + ISIS_SUBTLV_HDR_SIZE; | |
1154 | } | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
f2333421 | 1159 | /* Functions for Sub-TLV 3 SR Prefix-SID as per RFC8667 section 2.1 */ |
bd507085 CF |
1160 | static struct isis_item *copy_item_prefix_sid(struct isis_item *i) |
1161 | { | |
1162 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
1163 | struct isis_prefix_sid *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
1164 | ||
1165 | rv->flags = sid->flags; | |
1166 | rv->algorithm = sid->algorithm; | |
1167 | rv->value = sid->value; | |
1168 | return (struct isis_item *)rv; | |
1169 | } | |
1170 | ||
1171 | static void format_item_prefix_sid(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1172 | struct sbuf *buf, struct json_object *json, |
1173 | int indent) | |
bd507085 CF |
1174 | { |
1175 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
1176 | ||
a2cac12a JG |
1177 | if (json) { |
1178 | struct json_object *sr_json; | |
1179 | sr_json = json_object_new_object(); | |
1180 | json_object_object_add(json, "sr", sr_json); | |
1181 | if (sid->flags & ISIS_PREFIX_SID_VALUE) { | |
1182 | json_object_int_add(sr_json, "label", sid->value); | |
1183 | } else { | |
1184 | json_object_int_add(sr_json, "index", sid->value); | |
1185 | } | |
1186 | json_object_int_add(sr_json, "alg", sid->algorithm); | |
1187 | json_object_string_add( | |
1188 | sr_json, "readvertised", | |
1189 | ((sid->flags & ISIS_PREFIX_SID_READVERTISED) ? "yes" | |
1190 | : "")); | |
1191 | json_object_string_add( | |
1192 | sr_json, "node", | |
1193 | ((sid->flags & ISIS_PREFIX_SID_NODE) ? "yes" : "")); | |
1194 | json_object_string_add(sr_json, "php", | |
1195 | ((sid->flags & ISIS_PREFIX_SID_NO_PHP) | |
1196 | ? "no-php" | |
1197 | : "php")); | |
1198 | json_object_string_add( | |
1199 | sr_json, "explicit-null", | |
1200 | ((sid->flags & ISIS_PREFIX_SID_EXPLICIT_NULL) ? "yes" | |
1201 | : "")); | |
1202 | json_object_string_add( | |
1203 | sr_json, "value", | |
1204 | ((sid->flags & ISIS_PREFIX_SID_VALUE) ? "yes" : "")); | |
1205 | json_object_string_add( | |
1206 | sr_json, "local", | |
1207 | ((sid->flags & ISIS_PREFIX_SID_LOCAL) ? "yes" : "")); | |
1208 | ||
bd507085 | 1209 | } else { |
a2cac12a JG |
1210 | sbuf_push(buf, indent, "SR Prefix-SID "); |
1211 | if (sid->flags & ISIS_PREFIX_SID_VALUE) { | |
1212 | sbuf_push(buf, 0, "Label: %u, ", sid->value); | |
1213 | } else { | |
1214 | sbuf_push(buf, 0, "Index: %u, ", sid->value); | |
1215 | } | |
1216 | sbuf_push(buf, 0, "Algorithm: %hhu, ", sid->algorithm); | |
1217 | sbuf_push(buf, 0, "Flags:%s%s%s%s%s%s\n", | |
1218 | sid->flags & ISIS_PREFIX_SID_READVERTISED | |
1219 | ? " READVERTISED" | |
1220 | : "", | |
1221 | sid->flags & ISIS_PREFIX_SID_NODE ? " NODE" : "", | |
1222 | sid->flags & ISIS_PREFIX_SID_NO_PHP ? " NO-PHP" | |
1223 | : " PHP", | |
1224 | sid->flags & ISIS_PREFIX_SID_EXPLICIT_NULL | |
1225 | ? " EXPLICIT-NULL" | |
1226 | : "", | |
1227 | sid->flags & ISIS_PREFIX_SID_VALUE ? " VALUE" : "", | |
1228 | sid->flags & ISIS_PREFIX_SID_LOCAL ? " LOCAL" : ""); | |
bd507085 CF |
1229 | } |
1230 | } | |
1231 | ||
1232 | static void free_item_prefix_sid(struct isis_item *i) | |
1233 | { | |
1234 | XFREE(MTYPE_ISIS_SUBTLV, i); | |
1235 | } | |
1236 | ||
7ce31bab DS |
1237 | static int pack_item_prefix_sid(struct isis_item *i, struct stream *s, |
1238 | size_t *min_len) | |
bd507085 CF |
1239 | { |
1240 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
1241 | ||
1242 | uint8_t size = (sid->flags & ISIS_PREFIX_SID_VALUE) ? 5 : 6; | |
1243 | ||
7ce31bab DS |
1244 | if (STREAM_WRITEABLE(s) < size) { |
1245 | *min_len = size; | |
bd507085 | 1246 | return 1; |
7ce31bab | 1247 | } |
bd507085 CF |
1248 | |
1249 | stream_putc(s, sid->flags); | |
1250 | stream_putc(s, sid->algorithm); | |
1251 | ||
1252 | if (sid->flags & ISIS_PREFIX_SID_VALUE) { | |
1253 | stream_put3(s, sid->value); | |
1254 | } else { | |
1255 | stream_putl(s, sid->value); | |
1256 | } | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int unpack_item_prefix_sid(uint16_t mtid, uint8_t len, struct stream *s, | |
1262 | struct sbuf *log, void *dest, int indent) | |
1263 | { | |
1264 | struct isis_subtlvs *subtlvs = dest; | |
3e300703 DL |
1265 | struct isis_prefix_sid sid = { |
1266 | }; | |
bd507085 CF |
1267 | |
1268 | sbuf_push(log, indent, "Unpacking SR Prefix-SID...\n"); | |
1269 | ||
1270 | if (len < 5) { | |
1271 | sbuf_push(log, indent, | |
6cde4b45 | 1272 | "Not enough data left. (expected 5 or more bytes, got %hhu)\n", |
bd507085 CF |
1273 | len); |
1274 | return 1; | |
1275 | } | |
1276 | ||
1277 | sid.flags = stream_getc(s); | |
8b1e3453 RW |
1278 | if (!!(sid.flags & ISIS_PREFIX_SID_VALUE) |
1279 | != !!(sid.flags & ISIS_PREFIX_SID_LOCAL)) { | |
1b3f47d0 | 1280 | sbuf_push(log, indent, "Flags implausible: Local Flag needs to match Value Flag\n"); |
8b1e3453 | 1281 | return 1; |
bd507085 CF |
1282 | } |
1283 | ||
1284 | sid.algorithm = stream_getc(s); | |
1285 | ||
1b3f47d0 OD |
1286 | uint8_t expected_size = (sid.flags & ISIS_PREFIX_SID_VALUE) |
1287 | ? ISIS_SUBTLV_PREFIX_SID_SIZE | |
1288 | : ISIS_SUBTLV_PREFIX_SID_SIZE + 1; | |
bd507085 CF |
1289 | if (len != expected_size) { |
1290 | sbuf_push(log, indent, | |
6cde4b45 | 1291 | "TLV size differs from expected size. (expected %u but got %hhu)\n", |
bd507085 CF |
1292 | expected_size, len); |
1293 | return 1; | |
1294 | } | |
1295 | ||
1296 | if (sid.flags & ISIS_PREFIX_SID_VALUE) { | |
1297 | sid.value = stream_get3(s); | |
26f6acaf RW |
1298 | if (!IS_MPLS_UNRESERVED_LABEL(sid.value)) { |
1299 | sbuf_push(log, indent, "Invalid absolute SID %u\n", | |
1300 | sid.value); | |
1301 | return 1; | |
1302 | } | |
bd507085 CF |
1303 | } else { |
1304 | sid.value = stream_getl(s); | |
1305 | } | |
1306 | ||
a2cac12a | 1307 | format_item_prefix_sid(mtid, (struct isis_item *)&sid, log, NULL, indent + 2); |
bd507085 CF |
1308 | append_item(&subtlvs->prefix_sids, copy_item_prefix_sid((struct isis_item *)&sid)); |
1309 | return 0; | |
1310 | } | |
1311 | ||
7ef5fefc CF |
1312 | /* Functions for Sub-TVL ??? IPv6 Source Prefix */ |
1313 | ||
1314 | static struct prefix_ipv6 *copy_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p) | |
1315 | { | |
1316 | if (!p) | |
1317 | return NULL; | |
1318 | ||
1319 | struct prefix_ipv6 *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
1320 | rv->family = p->family; | |
1321 | rv->prefixlen = p->prefixlen; | |
1322 | memcpy(&rv->prefix, &p->prefix, sizeof(rv->prefix)); | |
1323 | return rv; | |
1324 | } | |
1325 | ||
1326 | static void format_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p, | |
a2cac12a JG |
1327 | struct sbuf *buf, |
1328 | struct json_object *json, | |
1329 | int indent) | |
7ef5fefc CF |
1330 | { |
1331 | if (!p) | |
1332 | return; | |
1333 | ||
1334 | char prefixbuf[PREFIX2STR_BUFFER]; | |
a2cac12a JG |
1335 | if (json) { |
1336 | prefix2str(p, prefixbuf, sizeof(prefixbuf)); | |
1337 | json_object_string_add(json, "ipv6-src-prefix", prefixbuf); | |
1338 | } else { | |
1339 | sbuf_push(buf, indent, "IPv6 Source Prefix: %s\n", | |
1340 | prefix2str(p, prefixbuf, sizeof(prefixbuf))); | |
1341 | } | |
7ef5fefc CF |
1342 | } |
1343 | ||
1344 | static int pack_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p, | |
1345 | struct stream *s) | |
1346 | { | |
1347 | if (!p) | |
1348 | return 0; | |
1349 | ||
1350 | if (STREAM_WRITEABLE(s) < 3 + (unsigned)PSIZE(p->prefixlen)) | |
1351 | return 1; | |
1352 | ||
1353 | stream_putc(s, ISIS_SUBTLV_IPV6_SOURCE_PREFIX); | |
1354 | stream_putc(s, 1 + PSIZE(p->prefixlen)); | |
1355 | stream_putc(s, p->prefixlen); | |
1356 | stream_put(s, &p->prefix, PSIZE(p->prefixlen)); | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | static int unpack_subtlv_ipv6_source_prefix(enum isis_tlv_context context, | |
1361 | uint8_t tlv_type, uint8_t tlv_len, | |
1362 | struct stream *s, struct sbuf *log, | |
1363 | void *dest, int indent) | |
1364 | { | |
1365 | struct isis_subtlvs *subtlvs = dest; | |
1366 | struct prefix_ipv6 p = { | |
1367 | .family = AF_INET6, | |
1368 | }; | |
1369 | ||
1370 | sbuf_push(log, indent, "Unpacking IPv6 Source Prefix Sub-TLV...\n"); | |
1371 | ||
1372 | if (tlv_len < 1) { | |
98c5bc15 | 1373 | sbuf_push(log, indent, |
6cde4b45 | 1374 | "Not enough data left. (expected 1 or more bytes, got %hhu)\n", |
98c5bc15 | 1375 | tlv_len); |
7ef5fefc CF |
1376 | return 1; |
1377 | } | |
1378 | ||
1379 | p.prefixlen = stream_getc(s); | |
13ccce6e | 1380 | if (p.prefixlen > IPV6_MAX_BITLEN) { |
1b3f47d0 | 1381 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv6\n", |
7ef5fefc CF |
1382 | p.prefixlen); |
1383 | return 1; | |
1384 | } | |
1385 | ||
1386 | if (tlv_len != 1 + PSIZE(p.prefixlen)) { | |
1387 | sbuf_push( | |
1388 | log, indent, | |
6cde4b45 | 1389 | "TLV size differs from expected size for the prefixlen. (expected %u but got %hhu)\n", |
7ef5fefc CF |
1390 | 1 + PSIZE(p.prefixlen), tlv_len); |
1391 | return 1; | |
1392 | } | |
1393 | ||
1394 | stream_get(&p.prefix, s, PSIZE(p.prefixlen)); | |
1395 | ||
1396 | if (subtlvs->source_prefix) { | |
1397 | sbuf_push( | |
1398 | log, indent, | |
1399 | "WARNING: source prefix Sub-TLV present multiple times.\n"); | |
1400 | /* Ignore all but first occurrence of the source prefix Sub-TLV | |
1401 | */ | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | subtlvs->source_prefix = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(p)); | |
1406 | memcpy(subtlvs->source_prefix, &p, sizeof(p)); | |
1407 | return 0; | |
1408 | } | |
1b3f47d0 | 1409 | |
bd507085 CF |
1410 | static struct isis_item *copy_item(enum isis_tlv_context context, |
1411 | enum isis_tlv_type type, | |
1412 | struct isis_item *item); | |
1413 | static void copy_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
1414 | struct isis_item_list *src, struct isis_item_list *dest); | |
1415 | static void format_items_(uint16_t mtid, enum isis_tlv_context context, | |
1416 | enum isis_tlv_type type, struct isis_item_list *items, | |
a2cac12a JG |
1417 | struct sbuf *buf, struct json_object *json, |
1418 | int indent); | |
bd507085 CF |
1419 | #define format_items(...) format_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) |
1420 | static void free_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
1421 | struct isis_item_list *items); | |
1422 | static int pack_items_(uint16_t mtid, enum isis_tlv_context context, | |
1423 | enum isis_tlv_type type, struct isis_item_list *items, | |
1424 | struct stream *s, struct isis_tlvs **fragment_tlvs, | |
2b64873d | 1425 | const struct pack_order_entry *pe, |
bd507085 CF |
1426 | struct isis_tlvs *(*new_fragment)(struct list *l), |
1427 | struct list *new_fragment_arg); | |
1428 | #define pack_items(...) pack_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) | |
7ef5fefc CF |
1429 | |
1430 | /* Functions related to subtlvs */ | |
1431 | ||
bd507085 | 1432 | static struct isis_subtlvs *isis_alloc_subtlvs(enum isis_tlv_context context) |
7ef5fefc CF |
1433 | { |
1434 | struct isis_subtlvs *result; | |
1435 | ||
1436 | result = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*result)); | |
bd507085 CF |
1437 | result->context = context; |
1438 | ||
1439 | init_item_list(&result->prefix_sids); | |
7ef5fefc CF |
1440 | |
1441 | return result; | |
1442 | } | |
1443 | ||
1444 | static struct isis_subtlvs *copy_subtlvs(struct isis_subtlvs *subtlvs) | |
1445 | { | |
1446 | if (!subtlvs) | |
1447 | return NULL; | |
1448 | ||
1449 | struct isis_subtlvs *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
1450 | ||
bd507085 CF |
1451 | rv->context = subtlvs->context; |
1452 | ||
1453 | copy_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, | |
1454 | &subtlvs->prefix_sids, &rv->prefix_sids); | |
1455 | ||
7ef5fefc CF |
1456 | rv->source_prefix = |
1457 | copy_subtlv_ipv6_source_prefix(subtlvs->source_prefix); | |
1458 | return rv; | |
1459 | } | |
1460 | ||
1461 | static void format_subtlvs(struct isis_subtlvs *subtlvs, struct sbuf *buf, | |
a2cac12a | 1462 | struct json_object *json, int indent) |
7ef5fefc | 1463 | { |
bd507085 | 1464 | format_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
a2cac12a | 1465 | &subtlvs->prefix_sids, buf, json, indent); |
bd507085 | 1466 | |
a2cac12a | 1467 | format_subtlv_ipv6_source_prefix(subtlvs->source_prefix, buf, json, indent); |
7ef5fefc CF |
1468 | } |
1469 | ||
1470 | static void isis_free_subtlvs(struct isis_subtlvs *subtlvs) | |
1471 | { | |
1472 | if (!subtlvs) | |
1473 | return; | |
1474 | ||
bd507085 CF |
1475 | free_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
1476 | &subtlvs->prefix_sids); | |
1477 | ||
7ef5fefc CF |
1478 | XFREE(MTYPE_ISIS_SUBTLV, subtlvs->source_prefix); |
1479 | ||
1480 | XFREE(MTYPE_ISIS_SUBTLV, subtlvs); | |
1481 | } | |
1482 | ||
1483 | static int pack_subtlvs(struct isis_subtlvs *subtlvs, struct stream *s) | |
1484 | { | |
1485 | int rv; | |
1486 | size_t subtlv_len_pos = stream_get_endp(s); | |
1487 | ||
1488 | if (STREAM_WRITEABLE(s) < 1) | |
1489 | return 1; | |
1490 | ||
1491 | stream_putc(s, 0); /* Put 0 as subtlvs length, filled in later */ | |
1492 | ||
bd507085 CF |
1493 | rv = pack_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
1494 | &subtlvs->prefix_sids, s, NULL, NULL, NULL, NULL); | |
1495 | if (rv) | |
1496 | return rv; | |
1497 | ||
7ef5fefc CF |
1498 | rv = pack_subtlv_ipv6_source_prefix(subtlvs->source_prefix, s); |
1499 | if (rv) | |
1500 | return rv; | |
1501 | ||
1502 | size_t subtlv_len = stream_get_endp(s) - subtlv_len_pos - 1; | |
1503 | if (subtlv_len > 255) | |
1504 | return 1; | |
1505 | ||
1506 | stream_putc_at(s, subtlv_len_pos, subtlv_len); | |
1507 | return 0; | |
1508 | } | |
1509 | ||
1510 | static int unpack_tlvs(enum isis_tlv_context context, size_t avail_len, | |
1511 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 1512 | int indent, bool *unpacked_known_tlvs); |
7ef5fefc CF |
1513 | |
1514 | /* Functions related to TLVs 1 Area Addresses */ | |
1515 | ||
1516 | static struct isis_item *copy_item_area_address(struct isis_item *i) | |
1517 | { | |
1518 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
841791b6 | 1519 | struct isis_area_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1520 | |
1521 | rv->len = addr->len; | |
1522 | memcpy(rv->addr, addr->addr, addr->len); | |
1523 | return (struct isis_item *)rv; | |
1524 | } | |
1525 | ||
1526 | static void format_item_area_address(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1527 | struct sbuf *buf, struct json_object *json, |
1528 | int indent) | |
7ef5fefc CF |
1529 | { |
1530 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
1531 | ||
a2cac12a JG |
1532 | if (json) { |
1533 | json_object_string_add(json, "area-addr", | |
1534 | isonet_print(addr->addr, addr->len)); | |
1535 | } else { | |
1536 | sbuf_push(buf, indent, "Area Address: %s\n", | |
1537 | isonet_print(addr->addr, addr->len)); | |
1538 | } | |
7ef5fefc CF |
1539 | } |
1540 | ||
1541 | static void free_item_area_address(struct isis_item *i) | |
1542 | { | |
841791b6 | 1543 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1544 | } |
1545 | ||
7ce31bab DS |
1546 | static int pack_item_area_address(struct isis_item *i, struct stream *s, |
1547 | size_t *min_len) | |
7ef5fefc CF |
1548 | { |
1549 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
1550 | ||
7ce31bab DS |
1551 | if (STREAM_WRITEABLE(s) < (unsigned)1 + addr->len) { |
1552 | *min_len = (unsigned)1 + addr->len; | |
7ef5fefc | 1553 | return 1; |
7ce31bab | 1554 | } |
7ef5fefc CF |
1555 | stream_putc(s, addr->len); |
1556 | stream_put(s, addr->addr, addr->len); | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static int unpack_item_area_address(uint16_t mtid, uint8_t len, | |
1561 | struct stream *s, struct sbuf *log, | |
1562 | void *dest, int indent) | |
1563 | { | |
1564 | struct isis_tlvs *tlvs = dest; | |
1565 | struct isis_area_address *rv = NULL; | |
1566 | ||
1567 | sbuf_push(log, indent, "Unpack area address...\n"); | |
1568 | if (len < 1) { | |
1569 | sbuf_push( | |
1570 | log, indent, | |
6cde4b45 | 1571 | "Not enough data left. (Expected 1 byte of address length, got %hhu)\n", |
7ef5fefc CF |
1572 | len); |
1573 | goto out; | |
1574 | } | |
1575 | ||
841791b6 | 1576 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1577 | rv->len = stream_getc(s); |
1578 | ||
1579 | if (len < 1 + rv->len) { | |
47b13e9b | 1580 | sbuf_push(log, indent, "Not enough data left. (Expected %hhu bytes of address, got %u)\n", |
7ef5fefc CF |
1581 | rv->len, len - 1); |
1582 | goto out; | |
1583 | } | |
1584 | ||
1585 | if (rv->len < 1 || rv->len > 20) { | |
1586 | sbuf_push(log, indent, | |
6cde4b45 | 1587 | "Implausible area address length %hhu\n", |
7ef5fefc CF |
1588 | rv->len); |
1589 | goto out; | |
1590 | } | |
1591 | ||
1592 | stream_get(rv->addr, s, rv->len); | |
1593 | ||
1594 | format_item_area_address(ISIS_MT_IPV4_UNICAST, (struct isis_item *)rv, | |
a2cac12a | 1595 | log, NULL, indent + 2); |
7ef5fefc CF |
1596 | append_item(&tlvs->area_addresses, (struct isis_item *)rv); |
1597 | return 0; | |
1598 | out: | |
841791b6 | 1599 | XFREE(MTYPE_ISIS_TLV, rv); |
7ef5fefc CF |
1600 | return 1; |
1601 | } | |
1602 | ||
1603 | /* Functions related to TLV 2 (Old-Style) IS Reach */ | |
1604 | static struct isis_item *copy_item_oldstyle_reach(struct isis_item *i) | |
1605 | { | |
1606 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
841791b6 | 1607 | struct isis_oldstyle_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1608 | |
1609 | memcpy(rv->id, r->id, 7); | |
1610 | rv->metric = r->metric; | |
1611 | return (struct isis_item *)rv; | |
1612 | } | |
1613 | ||
1614 | static void format_item_oldstyle_reach(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1615 | struct sbuf *buf, |
1616 | struct json_object *json, int indent) | |
7ef5fefc CF |
1617 | { |
1618 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
1619 | ||
a2cac12a JG |
1620 | if (json) { |
1621 | struct json_object *old_json; | |
1622 | old_json = json_object_new_object(); | |
1623 | json_object_object_add(json, "old-reach-style", old_json); | |
1624 | json_object_string_add(old_json, "is-reach", | |
1625 | isis_format_id(r->id, 7)); | |
1626 | json_object_int_add(old_json, "metric", r->metric); | |
1627 | } else | |
1628 | sbuf_push(buf, indent, "IS Reachability: %s (Metric: %hhu)\n", | |
1629 | isis_format_id(r->id, 7), r->metric); | |
7ef5fefc CF |
1630 | } |
1631 | ||
1632 | static void free_item_oldstyle_reach(struct isis_item *i) | |
1633 | { | |
841791b6 | 1634 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1635 | } |
1636 | ||
7ce31bab DS |
1637 | static int pack_item_oldstyle_reach(struct isis_item *i, struct stream *s, |
1638 | size_t *min_len) | |
7ef5fefc CF |
1639 | { |
1640 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
1641 | ||
7ce31bab DS |
1642 | if (STREAM_WRITEABLE(s) < 11) { |
1643 | *min_len = 11; | |
7ef5fefc | 1644 | return 1; |
7ce31bab | 1645 | } |
7ef5fefc CF |
1646 | |
1647 | stream_putc(s, r->metric); | |
1648 | stream_putc(s, 0x80); /* delay metric - unsupported */ | |
1649 | stream_putc(s, 0x80); /* expense metric - unsupported */ | |
1650 | stream_putc(s, 0x80); /* error metric - unsupported */ | |
1651 | stream_put(s, r->id, 7); | |
1652 | ||
1653 | return 0; | |
1654 | } | |
1655 | ||
1656 | static int unpack_item_oldstyle_reach(uint16_t mtid, uint8_t len, | |
1657 | struct stream *s, struct sbuf *log, | |
1658 | void *dest, int indent) | |
1659 | { | |
1660 | struct isis_tlvs *tlvs = dest; | |
1661 | ||
1662 | sbuf_push(log, indent, "Unpack oldstyle reach...\n"); | |
1663 | if (len < 11) { | |
1664 | sbuf_push( | |
1665 | log, indent, | |
6cde4b45 | 1666 | "Not enough data left.(Expected 11 bytes of reach information, got %hhu)\n", |
7ef5fefc CF |
1667 | len); |
1668 | return 1; | |
1669 | } | |
1670 | ||
841791b6 | 1671 | struct isis_oldstyle_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1672 | rv->metric = stream_getc(s); |
1673 | if ((rv->metric & 0x3f) != rv->metric) { | |
1674 | sbuf_push(log, indent, "Metric has unplausible format\n"); | |
1675 | rv->metric &= 0x3f; | |
1676 | } | |
1677 | stream_forward_getp(s, 3); /* Skip other metrics */ | |
1678 | stream_get(rv->id, s, 7); | |
1679 | ||
a2cac12a | 1680 | format_item_oldstyle_reach(mtid, (struct isis_item *)rv, log, NULL, |
7ef5fefc CF |
1681 | indent + 2); |
1682 | append_item(&tlvs->oldstyle_reach, (struct isis_item *)rv); | |
1683 | return 0; | |
1684 | } | |
1685 | ||
1686 | /* Functions related to TLV 6 LAN Neighbors */ | |
1687 | static struct isis_item *copy_item_lan_neighbor(struct isis_item *i) | |
1688 | { | |
1689 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
841791b6 | 1690 | struct isis_lan_neighbor *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1691 | |
1692 | memcpy(rv->mac, n->mac, 6); | |
1693 | return (struct isis_item *)rv; | |
1694 | } | |
1695 | ||
1696 | static void format_item_lan_neighbor(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1697 | struct sbuf *buf, struct json_object *json, |
1698 | int indent) | |
7ef5fefc CF |
1699 | { |
1700 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
1701 | ||
a2cac12a JG |
1702 | if (json) { |
1703 | json_object_string_add(json, "lan-neighbor", | |
1704 | isis_format_id(n->mac, 6)); | |
1705 | } else | |
1706 | sbuf_push(buf, indent, "LAN Neighbor: %s\n", | |
1707 | isis_format_id(n->mac, 6)); | |
7ef5fefc CF |
1708 | } |
1709 | ||
1710 | static void free_item_lan_neighbor(struct isis_item *i) | |
1711 | { | |
841791b6 | 1712 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1713 | } |
1714 | ||
7ce31bab DS |
1715 | static int pack_item_lan_neighbor(struct isis_item *i, struct stream *s, |
1716 | size_t *min_len) | |
7ef5fefc CF |
1717 | { |
1718 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
1719 | ||
7ce31bab DS |
1720 | if (STREAM_WRITEABLE(s) < 6) { |
1721 | *min_len = 6; | |
7ef5fefc | 1722 | return 1; |
7ce31bab | 1723 | } |
7ef5fefc CF |
1724 | |
1725 | stream_put(s, n->mac, 6); | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
1730 | static int unpack_item_lan_neighbor(uint16_t mtid, uint8_t len, | |
1731 | struct stream *s, struct sbuf *log, | |
1732 | void *dest, int indent) | |
1733 | { | |
1734 | struct isis_tlvs *tlvs = dest; | |
1735 | ||
1736 | sbuf_push(log, indent, "Unpack LAN neighbor...\n"); | |
1737 | if (len < 6) { | |
1738 | sbuf_push( | |
1739 | log, indent, | |
6cde4b45 | 1740 | "Not enough data left.(Expected 6 bytes of mac, got %hhu)\n", |
7ef5fefc CF |
1741 | len); |
1742 | return 1; | |
1743 | } | |
1744 | ||
841791b6 | 1745 | struct isis_lan_neighbor *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1746 | stream_get(rv->mac, s, 6); |
1747 | ||
a2cac12a | 1748 | format_item_lan_neighbor(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
1749 | append_item(&tlvs->lan_neighbor, (struct isis_item *)rv); |
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | /* Functions related to TLV 9 LSP Entry */ | |
1754 | static struct isis_item *copy_item_lsp_entry(struct isis_item *i) | |
1755 | { | |
1756 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
841791b6 | 1757 | struct isis_lsp_entry *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1758 | |
1759 | rv->rem_lifetime = e->rem_lifetime; | |
1760 | memcpy(rv->id, e->id, sizeof(rv->id)); | |
1761 | rv->seqno = e->seqno; | |
1762 | rv->checksum = e->checksum; | |
1763 | ||
1764 | return (struct isis_item *)rv; | |
1765 | } | |
1766 | ||
1767 | static void format_item_lsp_entry(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1768 | struct sbuf *buf, struct json_object *json, |
1769 | int indent) | |
7ef5fefc CF |
1770 | { |
1771 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
1772 | ||
a2cac12a JG |
1773 | if (json) { |
1774 | char buf[255]; | |
1775 | struct json_object *lsp_json; | |
1776 | lsp_json = json_object_new_object(); | |
1777 | json_object_object_add(json, "lsp-entry", lsp_json); | |
1778 | json_object_string_add(lsp_json, "id", isis_format_id(e->id, 8)); | |
1779 | snprintfrr(buf,sizeof(buf),"0x%08x",e->seqno); | |
1780 | json_object_string_add(lsp_json, "seq", buf); | |
1781 | snprintfrr(buf,sizeof(buf),"0x%04hx",e->checksum); | |
1782 | json_object_string_add(lsp_json, "chksum", buf); | |
1783 | json_object_int_add(lsp_json, "lifetime", e->checksum); | |
1784 | } else | |
996c9314 | 1785 | sbuf_push(buf, indent, |
6cde4b45 | 1786 | "LSP Entry: %s, seq 0x%08x, cksum 0x%04hx, lifetime %hus\n", |
7ef5fefc CF |
1787 | isis_format_id(e->id, 8), e->seqno, e->checksum, |
1788 | e->rem_lifetime); | |
1789 | } | |
1790 | ||
1791 | static void free_item_lsp_entry(struct isis_item *i) | |
1792 | { | |
841791b6 | 1793 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1794 | } |
1795 | ||
7ce31bab DS |
1796 | static int pack_item_lsp_entry(struct isis_item *i, struct stream *s, |
1797 | size_t *min_len) | |
7ef5fefc CF |
1798 | { |
1799 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
1800 | ||
7ce31bab DS |
1801 | if (STREAM_WRITEABLE(s) < 16) { |
1802 | *min_len = 16; | |
7ef5fefc | 1803 | return 1; |
7ce31bab | 1804 | } |
7ef5fefc CF |
1805 | |
1806 | stream_putw(s, e->rem_lifetime); | |
1807 | stream_put(s, e->id, 8); | |
1808 | stream_putl(s, e->seqno); | |
1809 | stream_putw(s, e->checksum); | |
1810 | ||
1811 | return 0; | |
1812 | } | |
1813 | ||
1814 | static int unpack_item_lsp_entry(uint16_t mtid, uint8_t len, struct stream *s, | |
1815 | struct sbuf *log, void *dest, int indent) | |
1816 | { | |
1817 | struct isis_tlvs *tlvs = dest; | |
1818 | ||
1819 | sbuf_push(log, indent, "Unpack LSP entry...\n"); | |
1820 | if (len < 16) { | |
1821 | sbuf_push( | |
1822 | log, indent, | |
6cde4b45 | 1823 | "Not enough data left. (Expected 16 bytes of LSP info, got %hhu", |
7ef5fefc CF |
1824 | len); |
1825 | return 1; | |
1826 | } | |
1827 | ||
841791b6 | 1828 | struct isis_lsp_entry *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1829 | rv->rem_lifetime = stream_getw(s); |
1830 | stream_get(rv->id, s, 8); | |
1831 | rv->seqno = stream_getl(s); | |
1832 | rv->checksum = stream_getw(s); | |
1833 | ||
a2cac12a | 1834 | format_item_lsp_entry(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
1835 | append_item(&tlvs->lsp_entries, (struct isis_item *)rv); |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | /* Functions related to TLVs 22/222 Extended Reach/MT Reach */ | |
1840 | ||
1841 | static struct isis_item *copy_item_extended_reach(struct isis_item *i) | |
1842 | { | |
1843 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
841791b6 | 1844 | struct isis_extended_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1845 | |
1846 | memcpy(rv->id, r->id, 7); | |
1847 | rv->metric = r->metric; | |
1848 | ||
1b3f47d0 OD |
1849 | if (r->subtlvs) |
1850 | rv->subtlvs = copy_item_ext_subtlvs(r->subtlvs, -1); | |
7ef5fefc CF |
1851 | |
1852 | return (struct isis_item *)rv; | |
1853 | } | |
1854 | ||
1855 | static void format_item_extended_reach(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1856 | struct sbuf *buf, |
1857 | struct json_object *json, int indent) | |
7ef5fefc CF |
1858 | { |
1859 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
1860 | ||
a2cac12a JG |
1861 | if (json) { |
1862 | struct json_object *reach_json; | |
1863 | reach_json = json_object_new_object(); | |
1864 | json_object_object_add(json, "ext-reach", reach_json); | |
1865 | json_object_string_add( | |
1866 | reach_json, "mt-id", | |
1867 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT"); | |
1868 | json_object_string_add(reach_json, "id", | |
1869 | isis_format_id(r->id, 7)); | |
1870 | json_object_int_add(reach_json, "metric", r->metric); | |
1871 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
1872 | json_object_string_add(reach_json, "mt-name", | |
1873 | isis_mtid2str(mtid)); | |
1874 | ||
1875 | if (r->subtlvs) | |
1876 | format_item_ext_subtlvs(r->subtlvs, NULL, json, | |
1877 | indent + 2, mtid); | |
1878 | } else { | |
1879 | sbuf_push(buf, indent, "%s Reachability: %s (Metric: %u)", | |
1880 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT", | |
1881 | isis_format_id(r->id, 7), r->metric); | |
1882 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
1883 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
1884 | sbuf_push(buf, 0, "\n"); | |
7ef5fefc | 1885 | |
a2cac12a JG |
1886 | if (r->subtlvs) |
1887 | format_item_ext_subtlvs(r->subtlvs, buf, NULL, | |
1888 | indent + 2, mtid); | |
1889 | } | |
7ef5fefc CF |
1890 | } |
1891 | ||
1892 | static void free_item_extended_reach(struct isis_item *i) | |
1893 | { | |
1894 | struct isis_extended_reach *item = (struct isis_extended_reach *)i; | |
1b3f47d0 OD |
1895 | if (item->subtlvs != NULL) |
1896 | free_item_ext_subtlvs(item->subtlvs); | |
841791b6 | 1897 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
1898 | } |
1899 | ||
7ce31bab DS |
1900 | static int pack_item_extended_reach(struct isis_item *i, struct stream *s, |
1901 | size_t *min_len) | |
7ef5fefc CF |
1902 | { |
1903 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
1b3f47d0 OD |
1904 | size_t len; |
1905 | size_t len_pos; | |
7ef5fefc | 1906 | |
7ce31bab DS |
1907 | if (STREAM_WRITEABLE(s) < 11 + ISIS_SUBTLV_MAX_SIZE) { |
1908 | *min_len = 11 + ISIS_SUBTLV_MAX_SIZE; | |
7ef5fefc | 1909 | return 1; |
7ce31bab | 1910 | } |
1b3f47d0 | 1911 | |
7ef5fefc CF |
1912 | stream_put(s, r->id, sizeof(r->id)); |
1913 | stream_put3(s, r->metric); | |
1b3f47d0 OD |
1914 | len_pos = stream_get_endp(s); |
1915 | /* Real length will be adjust after adding subTLVs */ | |
1916 | stream_putc(s, 11); | |
1917 | if (r->subtlvs) | |
7ce31bab | 1918 | pack_item_ext_subtlvs(r->subtlvs, s, min_len); |
1b3f47d0 OD |
1919 | /* Adjust length */ |
1920 | len = stream_get_endp(s) - len_pos - 1; | |
1921 | stream_putc_at(s, len_pos, len); | |
7ef5fefc CF |
1922 | return 0; |
1923 | } | |
1924 | ||
1925 | static int unpack_item_extended_reach(uint16_t mtid, uint8_t len, | |
1926 | struct stream *s, struct sbuf *log, | |
1927 | void *dest, int indent) | |
1928 | { | |
1929 | struct isis_tlvs *tlvs = dest; | |
1930 | struct isis_extended_reach *rv = NULL; | |
1931 | uint8_t subtlv_len; | |
1932 | struct isis_item_list *items; | |
1933 | ||
1934 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
1935 | items = &tlvs->extended_reach; | |
1936 | } else { | |
1937 | items = isis_get_mt_items(&tlvs->mt_reach, mtid); | |
1938 | } | |
1939 | ||
1940 | sbuf_push(log, indent, "Unpacking %s reachability...\n", | |
1941 | (mtid == ISIS_MT_IPV4_UNICAST) ? "extended" : "mt"); | |
1942 | ||
1943 | if (len < 11) { | |
98c5bc15 | 1944 | sbuf_push(log, indent, |
6cde4b45 | 1945 | "Not enough data left. (expected 11 or more bytes, got %hhu)\n", |
98c5bc15 | 1946 | len); |
7ef5fefc CF |
1947 | goto out; |
1948 | } | |
1949 | ||
841791b6 | 1950 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1951 | stream_get(rv->id, s, 7); |
1952 | rv->metric = stream_get3(s); | |
1953 | subtlv_len = stream_getc(s); | |
1954 | ||
7ef5fefc CF |
1955 | if ((size_t)len < ((size_t)11) + subtlv_len) { |
1956 | sbuf_push(log, indent, | |
47b13e9b | 1957 | "Not enough data left for subtlv size %hhu, there are only %u bytes left.\n", |
7ef5fefc CF |
1958 | subtlv_len, len - 11); |
1959 | goto out; | |
1960 | } | |
1961 | ||
6cde4b45 | 1962 | sbuf_push(log, indent, "Storing %hhu bytes of subtlvs\n", |
7ef5fefc CF |
1963 | subtlv_len); |
1964 | ||
1965 | if (subtlv_len) { | |
1b3f47d0 OD |
1966 | if (unpack_item_ext_subtlvs(mtid, subtlv_len, s, log, rv, |
1967 | indent + 4)) { | |
7ef5fefc CF |
1968 | goto out; |
1969 | } | |
7ef5fefc CF |
1970 | } |
1971 | ||
a2cac12a | 1972 | format_item_extended_reach(mtid, (struct isis_item *)rv, log, NULL, |
1b3f47d0 | 1973 | indent + 2); |
7ef5fefc CF |
1974 | append_item(items, (struct isis_item *)rv); |
1975 | return 0; | |
1976 | out: | |
1977 | if (rv) | |
1978 | free_item_extended_reach((struct isis_item *)rv); | |
1979 | ||
1980 | return 1; | |
1981 | } | |
1982 | ||
1983 | /* Functions related to TLV 128 (Old-Style) IP Reach */ | |
1984 | static struct isis_item *copy_item_oldstyle_ip_reach(struct isis_item *i) | |
1985 | { | |
1986 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
1987 | struct isis_oldstyle_ip_reach *rv = | |
841791b6 | 1988 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1989 | |
1990 | rv->metric = r->metric; | |
1991 | rv->prefix = r->prefix; | |
1992 | return (struct isis_item *)rv; | |
1993 | } | |
1994 | ||
1995 | static void format_item_oldstyle_ip_reach(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
1996 | struct sbuf *buf, |
1997 | struct json_object *json, int indent) | |
7ef5fefc CF |
1998 | { |
1999 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
2000 | char prefixbuf[PREFIX2STR_BUFFER]; | |
2001 | ||
a2cac12a JG |
2002 | if (json) { |
2003 | struct json_object *old_json; | |
2004 | old_json = json_object_new_object(); | |
2005 | json_object_object_add(json, "old-ip-reach-style", old_json); | |
2006 | json_object_string_add(old_json, "prefix", | |
2007 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf))); | |
2008 | json_object_int_add(old_json, "metric", r->metric); | |
2009 | } else | |
6cde4b45 | 2010 | sbuf_push(buf, indent, "IP Reachability: %s (Metric: %hhu)\n", |
996c9314 LB |
2011 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), |
2012 | r->metric); | |
7ef5fefc CF |
2013 | } |
2014 | ||
2015 | static void free_item_oldstyle_ip_reach(struct isis_item *i) | |
2016 | { | |
841791b6 | 2017 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
2018 | } |
2019 | ||
7ce31bab DS |
2020 | static int pack_item_oldstyle_ip_reach(struct isis_item *i, struct stream *s, |
2021 | size_t *min_len) | |
7ef5fefc CF |
2022 | { |
2023 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
2024 | ||
7ce31bab DS |
2025 | if (STREAM_WRITEABLE(s) < 12) { |
2026 | *min_len = 12; | |
7ef5fefc | 2027 | return 1; |
7ce31bab | 2028 | } |
7ef5fefc CF |
2029 | |
2030 | stream_putc(s, r->metric); | |
2031 | stream_putc(s, 0x80); /* delay metric - unsupported */ | |
2032 | stream_putc(s, 0x80); /* expense metric - unsupported */ | |
2033 | stream_putc(s, 0x80); /* error metric - unsupported */ | |
2034 | stream_put(s, &r->prefix.prefix, 4); | |
2035 | ||
2036 | struct in_addr mask; | |
2037 | masklen2ip(r->prefix.prefixlen, &mask); | |
2038 | stream_put(s, &mask, sizeof(mask)); | |
2039 | ||
2040 | return 0; | |
2041 | } | |
2042 | ||
2043 | static int unpack_item_oldstyle_ip_reach(uint16_t mtid, uint8_t len, | |
2044 | struct stream *s, struct sbuf *log, | |
2045 | void *dest, int indent) | |
2046 | { | |
2047 | sbuf_push(log, indent, "Unpack oldstyle ip reach...\n"); | |
2048 | if (len < 12) { | |
2049 | sbuf_push( | |
2050 | log, indent, | |
6cde4b45 | 2051 | "Not enough data left.(Expected 12 bytes of reach information, got %hhu)\n", |
7ef5fefc CF |
2052 | len); |
2053 | return 1; | |
2054 | } | |
2055 | ||
2056 | struct isis_oldstyle_ip_reach *rv = | |
841791b6 | 2057 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2058 | rv->metric = stream_getc(s); |
2059 | if ((rv->metric & 0x7f) != rv->metric) { | |
2060 | sbuf_push(log, indent, "Metric has unplausible format\n"); | |
2061 | rv->metric &= 0x7f; | |
2062 | } | |
2063 | stream_forward_getp(s, 3); /* Skip other metrics */ | |
2064 | rv->prefix.family = AF_INET; | |
2065 | stream_get(&rv->prefix.prefix, s, 4); | |
2066 | ||
2067 | struct in_addr mask; | |
2068 | stream_get(&mask, s, 4); | |
2069 | rv->prefix.prefixlen = ip_masklen(mask); | |
2070 | ||
a2cac12a | 2071 | format_item_oldstyle_ip_reach(mtid, (struct isis_item *)rv, log, NULL, |
7ef5fefc CF |
2072 | indent + 2); |
2073 | append_item(dest, (struct isis_item *)rv); | |
2074 | return 0; | |
2075 | } | |
2076 | ||
2077 | ||
2078 | /* Functions related to TLV 129 protocols supported */ | |
2079 | ||
2080 | static void copy_tlv_protocols_supported(struct isis_protocols_supported *src, | |
2081 | struct isis_protocols_supported *dest) | |
2082 | { | |
2083 | if (!src->protocols || !src->count) | |
2084 | return; | |
2085 | dest->count = src->count; | |
841791b6 | 2086 | dest->protocols = XCALLOC(MTYPE_ISIS_TLV, src->count); |
7ef5fefc CF |
2087 | memcpy(dest->protocols, src->protocols, src->count); |
2088 | } | |
2089 | ||
2090 | static void format_tlv_protocols_supported(struct isis_protocols_supported *p, | |
a2cac12a JG |
2091 | struct sbuf *buf, |
2092 | struct json_object *json, int indent) | |
7ef5fefc CF |
2093 | { |
2094 | if (!p || !p->count || !p->protocols) | |
2095 | return; | |
2096 | ||
a2cac12a JG |
2097 | if (json) { |
2098 | struct json_object *protocol_json; | |
2099 | char buf[255]; | |
2100 | ||
2101 | protocol_json = json_object_new_object(); | |
2102 | json_object_object_add(json, "protocols-supported", | |
2103 | protocol_json); | |
2104 | for (uint8_t i = 0; i < p->count; i++) { | |
2105 | snprintfrr(buf, sizeof(buf), "%d", i); | |
2106 | json_object_string_add(protocol_json, buf, | |
2107 | nlpid2str(p->protocols[i])); | |
2108 | } | |
2109 | } else { | |
2110 | sbuf_push(buf, indent, "Protocols Supported: "); | |
2111 | for (uint8_t i = 0; i < p->count; i++) { | |
2112 | sbuf_push(buf, 0, "%s%s", nlpid2str(p->protocols[i]), | |
2113 | (i + 1 < p->count) ? ", " : ""); | |
2114 | } | |
2115 | sbuf_push(buf, 0, "\n"); | |
7ef5fefc | 2116 | } |
7ef5fefc CF |
2117 | } |
2118 | ||
2119 | static void free_tlv_protocols_supported(struct isis_protocols_supported *p) | |
2120 | { | |
841791b6 | 2121 | XFREE(MTYPE_ISIS_TLV, p->protocols); |
7ef5fefc CF |
2122 | } |
2123 | ||
2124 | static int pack_tlv_protocols_supported(struct isis_protocols_supported *p, | |
2125 | struct stream *s) | |
2126 | { | |
2127 | if (!p || !p->count || !p->protocols) | |
2128 | return 0; | |
2129 | ||
2130 | if (STREAM_WRITEABLE(s) < (unsigned)(p->count + 2)) | |
2131 | return 1; | |
2132 | ||
2133 | stream_putc(s, ISIS_TLV_PROTOCOLS_SUPPORTED); | |
2134 | stream_putc(s, p->count); | |
2135 | stream_put(s, p->protocols, p->count); | |
2136 | return 0; | |
2137 | } | |
2138 | ||
2139 | static int unpack_tlv_protocols_supported(enum isis_tlv_context context, | |
2140 | uint8_t tlv_type, uint8_t tlv_len, | |
2141 | struct stream *s, struct sbuf *log, | |
2142 | void *dest, int indent) | |
2143 | { | |
2144 | struct isis_tlvs *tlvs = dest; | |
2145 | ||
2146 | sbuf_push(log, indent, "Unpacking Protocols Supported TLV...\n"); | |
2147 | if (!tlv_len) { | |
2148 | sbuf_push(log, indent, "WARNING: No protocols included\n"); | |
2149 | return 0; | |
2150 | } | |
2151 | if (tlvs->protocols_supported.protocols) { | |
2152 | sbuf_push( | |
2153 | log, indent, | |
2154 | "WARNING: protocols supported TLV present multiple times.\n"); | |
2155 | stream_forward_getp(s, tlv_len); | |
2156 | return 0; | |
2157 | } | |
2158 | ||
2159 | tlvs->protocols_supported.count = tlv_len; | |
841791b6 | 2160 | tlvs->protocols_supported.protocols = XCALLOC(MTYPE_ISIS_TLV, tlv_len); |
7ef5fefc CF |
2161 | stream_get(tlvs->protocols_supported.protocols, s, tlv_len); |
2162 | ||
a2cac12a | 2163 | format_tlv_protocols_supported(&tlvs->protocols_supported, log, NULL, |
7ef5fefc CF |
2164 | indent + 2); |
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | /* Functions related to TLV 132 IPv4 Interface addresses */ | |
2169 | static struct isis_item *copy_item_ipv4_address(struct isis_item *i) | |
2170 | { | |
2171 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
841791b6 | 2172 | struct isis_ipv4_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2173 | |
2174 | rv->addr = a->addr; | |
2175 | return (struct isis_item *)rv; | |
2176 | } | |
2177 | ||
2178 | static void format_item_ipv4_address(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
2179 | struct sbuf *buf, struct json_object *json, |
2180 | int indent) | |
7ef5fefc CF |
2181 | { |
2182 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
2183 | char addrbuf[INET_ADDRSTRLEN]; | |
2184 | ||
2185 | inet_ntop(AF_INET, &a->addr, addrbuf, sizeof(addrbuf)); | |
a2cac12a JG |
2186 | if (json) { |
2187 | json_object_string_add(json, "ipv4", addrbuf); | |
2188 | } else { | |
2189 | sbuf_push(buf, indent, "IPv4 Interface Address: %s\n", addrbuf); | |
2190 | } | |
7ef5fefc CF |
2191 | } |
2192 | ||
2193 | static void free_item_ipv4_address(struct isis_item *i) | |
2194 | { | |
841791b6 | 2195 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
2196 | } |
2197 | ||
7ce31bab DS |
2198 | static int pack_item_ipv4_address(struct isis_item *i, struct stream *s, |
2199 | size_t *min_len) | |
7ef5fefc CF |
2200 | { |
2201 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
2202 | ||
7ce31bab DS |
2203 | if (STREAM_WRITEABLE(s) < 4) { |
2204 | *min_len = 4; | |
7ef5fefc | 2205 | return 1; |
7ce31bab | 2206 | } |
7ef5fefc CF |
2207 | |
2208 | stream_put(s, &a->addr, 4); | |
2209 | ||
2210 | return 0; | |
2211 | } | |
2212 | ||
2213 | static int unpack_item_ipv4_address(uint16_t mtid, uint8_t len, | |
2214 | struct stream *s, struct sbuf *log, | |
2215 | void *dest, int indent) | |
2216 | { | |
2217 | struct isis_tlvs *tlvs = dest; | |
2218 | ||
2219 | sbuf_push(log, indent, "Unpack IPv4 Interface address...\n"); | |
2220 | if (len < 4) { | |
2221 | sbuf_push( | |
2222 | log, indent, | |
6cde4b45 | 2223 | "Not enough data left.(Expected 4 bytes of IPv4 address, got %hhu)\n", |
7ef5fefc CF |
2224 | len); |
2225 | return 1; | |
2226 | } | |
2227 | ||
841791b6 | 2228 | struct isis_ipv4_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2229 | stream_get(&rv->addr, s, 4); |
2230 | ||
a2cac12a | 2231 | format_item_ipv4_address(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
2232 | append_item(&tlvs->ipv4_address, (struct isis_item *)rv); |
2233 | return 0; | |
2234 | } | |
2235 | ||
2236 | ||
2237 | /* Functions related to TLV 232 IPv6 Interface addresses */ | |
2238 | static struct isis_item *copy_item_ipv6_address(struct isis_item *i) | |
2239 | { | |
2240 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
841791b6 | 2241 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2242 | |
2243 | rv->addr = a->addr; | |
2244 | return (struct isis_item *)rv; | |
2245 | } | |
2246 | ||
2247 | static void format_item_ipv6_address(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
2248 | struct sbuf *buf, struct json_object *json, |
2249 | int indent) | |
7ef5fefc CF |
2250 | { |
2251 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
2252 | char addrbuf[INET6_ADDRSTRLEN]; | |
2253 | ||
2254 | inet_ntop(AF_INET6, &a->addr, addrbuf, sizeof(addrbuf)); | |
a2cac12a JG |
2255 | if (json) |
2256 | json_object_string_add(json, "ipv6", addrbuf); | |
2257 | else | |
2258 | sbuf_push(buf, indent, "IPv6 Interface Address: %s\n", addrbuf); | |
7ef5fefc CF |
2259 | } |
2260 | ||
2261 | static void free_item_ipv6_address(struct isis_item *i) | |
2262 | { | |
841791b6 | 2263 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
2264 | } |
2265 | ||
7ce31bab DS |
2266 | static int pack_item_ipv6_address(struct isis_item *i, struct stream *s, |
2267 | size_t *min_len) | |
7ef5fefc CF |
2268 | { |
2269 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
2270 | ||
173f8887 OD |
2271 | if (STREAM_WRITEABLE(s) < IPV6_MAX_BYTELEN) { |
2272 | *min_len = IPV6_MAX_BYTELEN; | |
7ef5fefc | 2273 | return 1; |
7ce31bab | 2274 | } |
7ef5fefc | 2275 | |
173f8887 | 2276 | stream_put(s, &a->addr, IPV6_MAX_BYTELEN); |
7ef5fefc CF |
2277 | |
2278 | return 0; | |
2279 | } | |
2280 | ||
2281 | static int unpack_item_ipv6_address(uint16_t mtid, uint8_t len, | |
2282 | struct stream *s, struct sbuf *log, | |
2283 | void *dest, int indent) | |
2284 | { | |
2285 | struct isis_tlvs *tlvs = dest; | |
2286 | ||
2287 | sbuf_push(log, indent, "Unpack IPv6 Interface address...\n"); | |
2288 | if (len < 16) { | |
2289 | sbuf_push( | |
2290 | log, indent, | |
6cde4b45 | 2291 | "Not enough data left.(Expected 16 bytes of IPv6 address, got %hhu)\n", |
7ef5fefc CF |
2292 | len); |
2293 | return 1; | |
2294 | } | |
2295 | ||
841791b6 | 2296 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
173f8887 | 2297 | stream_get(&rv->addr, s, IPV6_MAX_BYTELEN); |
7ef5fefc | 2298 | |
a2cac12a | 2299 | format_item_ipv6_address(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
2300 | append_item(&tlvs->ipv6_address, (struct isis_item *)rv); |
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | ||
173f8887 OD |
2305 | /* Functions related to TLV 233 Global IPv6 Interface addresses */ |
2306 | static struct isis_item *copy_item_global_ipv6_address(struct isis_item *i) | |
2307 | { | |
2308 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
2309 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2310 | ||
2311 | rv->addr = a->addr; | |
2312 | return (struct isis_item *)rv; | |
2313 | } | |
2314 | ||
2315 | static void format_item_global_ipv6_address(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
2316 | struct sbuf *buf, |
2317 | struct json_object *json, | |
2318 | int indent) | |
173f8887 OD |
2319 | { |
2320 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
2321 | char addrbuf[INET6_ADDRSTRLEN]; | |
2322 | ||
2323 | inet_ntop(AF_INET6, &a->addr, addrbuf, sizeof(addrbuf)); | |
a2cac12a JG |
2324 | if (json) |
2325 | json_object_string_add(json, "global-ipv6", addrbuf); | |
2326 | else | |
2327 | sbuf_push(buf, indent, "Global IPv6 Interface Address: %s\n", | |
2328 | addrbuf); | |
173f8887 OD |
2329 | } |
2330 | ||
2331 | static void free_item_global_ipv6_address(struct isis_item *i) | |
2332 | { | |
2333 | XFREE(MTYPE_ISIS_TLV, i); | |
2334 | } | |
2335 | ||
2336 | static int pack_item_global_ipv6_address(struct isis_item *i, struct stream *s, | |
2337 | size_t *min_len) | |
2338 | { | |
2339 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
2340 | ||
2341 | if (STREAM_WRITEABLE(s) < IPV6_MAX_BYTELEN) { | |
2342 | *min_len = IPV6_MAX_BYTELEN; | |
2343 | return 1; | |
2344 | } | |
2345 | ||
2346 | stream_put(s, &a->addr, IPV6_MAX_BYTELEN); | |
2347 | ||
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | static int unpack_item_global_ipv6_address(uint16_t mtid, uint8_t len, | |
2352 | struct stream *s, struct sbuf *log, | |
2353 | void *dest, int indent) | |
2354 | { | |
2355 | struct isis_tlvs *tlvs = dest; | |
2356 | ||
2357 | sbuf_push(log, indent, "Unpack Global IPv6 Interface address...\n"); | |
2358 | if (len < IPV6_MAX_BYTELEN) { | |
2359 | sbuf_push( | |
2360 | log, indent, | |
2361 | "Not enough data left.(Expected 16 bytes of IPv6 address, got %hhu)\n", | |
2362 | len); | |
2363 | return 1; | |
2364 | } | |
2365 | ||
2366 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2367 | stream_get(&rv->addr, s, IPV6_MAX_BYTELEN); | |
2368 | ||
a2cac12a | 2369 | format_item_global_ipv6_address(mtid, (struct isis_item *)rv, log, NULL, |
173f8887 OD |
2370 | indent + 2); |
2371 | append_item(&tlvs->global_ipv6_address, (struct isis_item *)rv); | |
2372 | return 0; | |
2373 | } | |
2374 | ||
7ef5fefc CF |
2375 | /* Functions related to TLV 229 MT Router information */ |
2376 | static struct isis_item *copy_item_mt_router_info(struct isis_item *i) | |
2377 | { | |
2378 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
841791b6 | 2379 | struct isis_mt_router_info *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2380 | |
2381 | rv->overload = info->overload; | |
2382 | rv->attached = info->attached; | |
2383 | rv->mtid = info->mtid; | |
2384 | return (struct isis_item *)rv; | |
2385 | } | |
2386 | ||
2387 | static void format_item_mt_router_info(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
2388 | struct sbuf *buf, |
2389 | struct json_object *json, int indent) | |
7ef5fefc CF |
2390 | { |
2391 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
2392 | ||
a2cac12a JG |
2393 | if (json) { |
2394 | struct json_object *mt_json; | |
2395 | mt_json = json_object_new_object(); | |
2396 | json_object_object_add(json, "mt", mt_json); | |
2397 | json_object_int_add(mt_json, "mtid", info->mtid); | |
2398 | json_object_string_add(mt_json, "overload", info->overload?"true":"false"); | |
2399 | json_object_string_add(mt_json, "attached", info->attached?"true":"false"); | |
2400 | } else | |
2401 | sbuf_push(buf, indent, "MT Router Info: %s%s%s\n", | |
a15014f3 | 2402 | isis_mtid2str_fake(info->mtid), |
a2cac12a JG |
2403 | info->overload ? " Overload" : "", |
2404 | info->attached ? " Attached" : ""); | |
7ef5fefc CF |
2405 | } |
2406 | ||
2407 | static void free_item_mt_router_info(struct isis_item *i) | |
2408 | { | |
841791b6 | 2409 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
2410 | } |
2411 | ||
7ce31bab DS |
2412 | static int pack_item_mt_router_info(struct isis_item *i, struct stream *s, |
2413 | size_t *min_len) | |
7ef5fefc CF |
2414 | { |
2415 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
2416 | ||
7ce31bab DS |
2417 | if (STREAM_WRITEABLE(s) < 2) { |
2418 | *min_len = 2; | |
7ef5fefc | 2419 | return 1; |
7ce31bab | 2420 | } |
7ef5fefc CF |
2421 | |
2422 | uint16_t entry = info->mtid; | |
2423 | ||
2424 | if (info->overload) | |
2425 | entry |= ISIS_MT_OL_MASK; | |
2426 | if (info->attached) | |
2427 | entry |= ISIS_MT_AT_MASK; | |
2428 | ||
2429 | stream_putw(s, entry); | |
2430 | ||
2431 | return 0; | |
2432 | } | |
2433 | ||
2434 | static int unpack_item_mt_router_info(uint16_t mtid, uint8_t len, | |
2435 | struct stream *s, struct sbuf *log, | |
2436 | void *dest, int indent) | |
2437 | { | |
2438 | struct isis_tlvs *tlvs = dest; | |
2439 | ||
2440 | sbuf_push(log, indent, "Unpack MT Router info...\n"); | |
2441 | if (len < 2) { | |
2442 | sbuf_push( | |
2443 | log, indent, | |
6cde4b45 | 2444 | "Not enough data left.(Expected 2 bytes of MT info, got %hhu)\n", |
7ef5fefc CF |
2445 | len); |
2446 | return 1; | |
2447 | } | |
2448 | ||
841791b6 | 2449 | struct isis_mt_router_info *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2450 | |
2451 | uint16_t entry = stream_getw(s); | |
2452 | rv->overload = entry & ISIS_MT_OL_MASK; | |
2453 | rv->attached = entry & ISIS_MT_AT_MASK; | |
2454 | rv->mtid = entry & ISIS_MT_MASK; | |
2455 | ||
a2cac12a | 2456 | format_item_mt_router_info(mtid, (struct isis_item *)rv, log, NULL, |
7ef5fefc CF |
2457 | indent + 2); |
2458 | append_item(&tlvs->mt_router_info, (struct isis_item *)rv); | |
2459 | return 0; | |
2460 | } | |
2461 | ||
2462 | /* Functions related to TLV 134 TE Router ID */ | |
2463 | ||
2464 | static struct in_addr *copy_tlv_te_router_id(const struct in_addr *id) | |
2465 | { | |
2466 | if (!id) | |
2467 | return NULL; | |
2468 | ||
841791b6 | 2469 | struct in_addr *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2470 | memcpy(rv, id, sizeof(*rv)); |
2471 | return rv; | |
2472 | } | |
2473 | ||
2474 | static void format_tlv_te_router_id(const struct in_addr *id, struct sbuf *buf, | |
a2cac12a | 2475 | struct json_object *json, int indent) |
7ef5fefc CF |
2476 | { |
2477 | if (!id) | |
2478 | return; | |
2479 | ||
2480 | char addrbuf[INET_ADDRSTRLEN]; | |
2481 | inet_ntop(AF_INET, id, addrbuf, sizeof(addrbuf)); | |
a2cac12a JG |
2482 | if (json) |
2483 | json_object_string_add(json, "te-router-id", addrbuf); | |
2484 | else | |
2485 | sbuf_push(buf, indent, "TE Router ID: %s\n", addrbuf); | |
7ef5fefc CF |
2486 | } |
2487 | ||
2488 | static void free_tlv_te_router_id(struct in_addr *id) | |
2489 | { | |
841791b6 | 2490 | XFREE(MTYPE_ISIS_TLV, id); |
7ef5fefc CF |
2491 | } |
2492 | ||
2493 | static int pack_tlv_te_router_id(const struct in_addr *id, struct stream *s) | |
2494 | { | |
2495 | if (!id) | |
2496 | return 0; | |
2497 | ||
2498 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + sizeof(*id))) | |
2499 | return 1; | |
2500 | ||
2501 | stream_putc(s, ISIS_TLV_TE_ROUTER_ID); | |
2502 | stream_putc(s, 4); | |
2503 | stream_put(s, id, 4); | |
2504 | return 0; | |
2505 | } | |
2506 | ||
2507 | static int unpack_tlv_te_router_id(enum isis_tlv_context context, | |
2508 | uint8_t tlv_type, uint8_t tlv_len, | |
2509 | struct stream *s, struct sbuf *log, | |
2510 | void *dest, int indent) | |
2511 | { | |
2512 | struct isis_tlvs *tlvs = dest; | |
2513 | ||
2514 | sbuf_push(log, indent, "Unpacking TE Router ID TLV...\n"); | |
2515 | if (tlv_len != 4) { | |
2516 | sbuf_push(log, indent, "WARNING: Length invalid\n"); | |
2517 | return 1; | |
2518 | } | |
2519 | ||
2520 | if (tlvs->te_router_id) { | |
2521 | sbuf_push(log, indent, | |
2522 | "WARNING: TE Router ID present multiple times.\n"); | |
2523 | stream_forward_getp(s, tlv_len); | |
2524 | return 0; | |
2525 | } | |
2526 | ||
841791b6 | 2527 | tlvs->te_router_id = XCALLOC(MTYPE_ISIS_TLV, 4); |
7ef5fefc | 2528 | stream_get(tlvs->te_router_id, s, 4); |
a2cac12a | 2529 | format_tlv_te_router_id(tlvs->te_router_id, log, NULL, indent + 2); |
7ef5fefc CF |
2530 | return 0; |
2531 | } | |
2532 | ||
2533 | ||
2534 | /* Functions related to TLVs 135/235 extended IP reach/MT IP Reach */ | |
2535 | ||
2536 | static struct isis_item *copy_item_extended_ip_reach(struct isis_item *i) | |
2537 | { | |
2538 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
2539 | struct isis_extended_ip_reach *rv = | |
841791b6 | 2540 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2541 | |
2542 | rv->metric = r->metric; | |
2543 | rv->down = r->down; | |
2544 | rv->prefix = r->prefix; | |
1b3f47d0 | 2545 | rv->subtlvs = copy_subtlvs(r->subtlvs); |
7ef5fefc CF |
2546 | |
2547 | return (struct isis_item *)rv; | |
2548 | } | |
2549 | ||
2550 | static void format_item_extended_ip_reach(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
2551 | struct sbuf *buf, |
2552 | struct json_object *json, int indent) | |
7ef5fefc CF |
2553 | { |
2554 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
2555 | char prefixbuf[PREFIX2STR_BUFFER]; | |
2556 | ||
a2cac12a JG |
2557 | if (json) { |
2558 | struct json_object *ext_json; | |
2559 | ext_json = json_object_new_object(); | |
2560 | json_object_object_add(json, "ext-ip-reach", ext_json); | |
2561 | json_object_string_add( | |
2562 | json, "mt-id", | |
2563 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT"); | |
2564 | json_object_string_add( | |
2565 | json, "ip-reach", | |
2566 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf))); | |
2567 | json_object_int_add(json, "ip-reach-metric", r->metric); | |
2568 | json_object_string_add(json, "down", r->down ? "yes" : ""); | |
2569 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
2570 | json_object_string_add(json, "mt-name", | |
2571 | isis_mtid2str(mtid)); | |
2572 | if (r->subtlvs) { | |
2573 | struct json_object *subtlv_json; | |
2574 | subtlv_json = json_object_new_object(); | |
2575 | json_object_object_add(json, "subtlvs", subtlv_json); | |
2576 | format_subtlvs(r->subtlvs, NULL, subtlv_json, 0); | |
2577 | } | |
2578 | } else { | |
2579 | sbuf_push(buf, indent, "%s IP Reachability: %s (Metric: %u)%s", | |
2580 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT", | |
2581 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), | |
2582 | r->metric, r->down ? " Down" : ""); | |
2583 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
2584 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
2585 | sbuf_push(buf, 0, "\n"); | |
2586 | ||
2587 | if (r->subtlvs) { | |
2588 | sbuf_push(buf, indent, " Subtlvs:\n"); | |
2589 | format_subtlvs(r->subtlvs, buf, NULL, indent + 4); | |
2590 | } | |
9826647e | 2591 | } |
7ef5fefc CF |
2592 | } |
2593 | ||
2594 | static void free_item_extended_ip_reach(struct isis_item *i) | |
2595 | { | |
2596 | struct isis_extended_ip_reach *item = | |
2597 | (struct isis_extended_ip_reach *)i; | |
bd507085 | 2598 | isis_free_subtlvs(item->subtlvs); |
841791b6 | 2599 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
2600 | } |
2601 | ||
7ce31bab DS |
2602 | static int pack_item_extended_ip_reach(struct isis_item *i, struct stream *s, |
2603 | size_t *min_len) | |
7ef5fefc CF |
2604 | { |
2605 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
2606 | uint8_t control; | |
2607 | ||
7ce31bab DS |
2608 | if (STREAM_WRITEABLE(s) < 5) { |
2609 | *min_len = 5; | |
7ef5fefc | 2610 | return 1; |
7ce31bab | 2611 | } |
7ef5fefc CF |
2612 | stream_putl(s, r->metric); |
2613 | ||
2614 | control = r->down ? ISIS_EXTENDED_IP_REACH_DOWN : 0; | |
2615 | control |= r->prefix.prefixlen; | |
bd507085 CF |
2616 | control |= r->subtlvs ? ISIS_EXTENDED_IP_REACH_SUBTLV : 0; |
2617 | ||
7ef5fefc CF |
2618 | stream_putc(s, control); |
2619 | ||
7ce31bab DS |
2620 | if (STREAM_WRITEABLE(s) < (unsigned)PSIZE(r->prefix.prefixlen)) { |
2621 | *min_len = 5 + (unsigned)PSIZE(r->prefix.prefixlen); | |
7ef5fefc | 2622 | return 1; |
7ce31bab | 2623 | } |
7ef5fefc | 2624 | stream_put(s, &r->prefix.prefix.s_addr, PSIZE(r->prefix.prefixlen)); |
bd507085 CF |
2625 | |
2626 | if (r->subtlvs) | |
2627 | return pack_subtlvs(r->subtlvs, s); | |
7ef5fefc CF |
2628 | return 0; |
2629 | } | |
2630 | ||
2631 | static int unpack_item_extended_ip_reach(uint16_t mtid, uint8_t len, | |
2632 | struct stream *s, struct sbuf *log, | |
2633 | void *dest, int indent) | |
2634 | { | |
2635 | struct isis_tlvs *tlvs = dest; | |
2636 | struct isis_extended_ip_reach *rv = NULL; | |
2637 | size_t consume; | |
2638 | uint8_t control, subtlv_len; | |
2639 | struct isis_item_list *items; | |
2640 | ||
2641 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
2642 | items = &tlvs->extended_ip_reach; | |
2643 | } else { | |
2644 | items = isis_get_mt_items(&tlvs->mt_ip_reach, mtid); | |
2645 | } | |
2646 | ||
2647 | sbuf_push(log, indent, "Unpacking %s IPv4 reachability...\n", | |
2648 | (mtid == ISIS_MT_IPV4_UNICAST) ? "extended" : "mt"); | |
2649 | ||
2650 | consume = 5; | |
2651 | if (len < consume) { | |
98c5bc15 | 2652 | sbuf_push(log, indent, |
6cde4b45 | 2653 | "Not enough data left. (expected 5 or more bytes, got %hhu)\n", |
98c5bc15 | 2654 | len); |
7ef5fefc CF |
2655 | goto out; |
2656 | } | |
2657 | ||
841791b6 | 2658 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2659 | |
2660 | rv->metric = stream_getl(s); | |
2661 | control = stream_getc(s); | |
2662 | rv->down = (control & ISIS_EXTENDED_IP_REACH_DOWN); | |
2663 | rv->prefix.family = AF_INET; | |
2664 | rv->prefix.prefixlen = control & 0x3f; | |
12256b84 | 2665 | if (rv->prefix.prefixlen > IPV4_MAX_BITLEN) { |
1b3f47d0 | 2666 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv4\n", |
7ef5fefc CF |
2667 | rv->prefix.prefixlen); |
2668 | goto out; | |
2669 | } | |
2670 | ||
2671 | consume += PSIZE(rv->prefix.prefixlen); | |
2672 | if (len < consume) { | |
98c5bc15 CF |
2673 | sbuf_push(log, indent, |
2674 | "Expected %u bytes of prefix, but only %u bytes available.\n", | |
2675 | PSIZE(rv->prefix.prefixlen), len - 5); | |
7ef5fefc CF |
2676 | goto out; |
2677 | } | |
2678 | stream_get(&rv->prefix.prefix.s_addr, s, PSIZE(rv->prefix.prefixlen)); | |
2679 | in_addr_t orig_prefix = rv->prefix.prefix.s_addr; | |
2680 | apply_mask_ipv4(&rv->prefix); | |
2681 | if (orig_prefix != rv->prefix.prefix.s_addr) | |
2682 | sbuf_push(log, indent + 2, | |
2683 | "WARNING: Prefix had hostbits set.\n"); | |
a2cac12a | 2684 | format_item_extended_ip_reach(mtid, (struct isis_item *)rv, log, NULL, |
7ef5fefc CF |
2685 | indent + 2); |
2686 | ||
2687 | if (control & ISIS_EXTENDED_IP_REACH_SUBTLV) { | |
2688 | consume += 1; | |
2689 | if (len < consume) { | |
98c5bc15 CF |
2690 | sbuf_push(log, indent, |
2691 | "Expected 1 byte of subtlv len, but no more data present.\n"); | |
7ef5fefc CF |
2692 | goto out; |
2693 | } | |
2694 | subtlv_len = stream_getc(s); | |
2695 | ||
2696 | if (!subtlv_len) { | |
98c5bc15 CF |
2697 | sbuf_push(log, indent + 2, |
2698 | " WARNING: subtlv bit is set, but there are no subtlvs.\n"); | |
7ef5fefc CF |
2699 | } |
2700 | consume += subtlv_len; | |
2701 | if (len < consume) { | |
98c5bc15 | 2702 | sbuf_push(log, indent, |
6cde4b45 | 2703 | "Expected %hhu bytes of subtlvs, but only %u bytes available.\n", |
98c5bc15 CF |
2704 | subtlv_len, |
2705 | len - 6 - PSIZE(rv->prefix.prefixlen)); | |
7ef5fefc CF |
2706 | goto out; |
2707 | } | |
bd507085 CF |
2708 | |
2709 | rv->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IP_REACH); | |
bf555bf0 CF |
2710 | bool unpacked_known_tlvs = false; |
2711 | ||
bd507085 | 2712 | if (unpack_tlvs(ISIS_CONTEXT_SUBTLV_IP_REACH, subtlv_len, s, |
bf555bf0 | 2713 | log, rv->subtlvs, indent + 4, &unpacked_known_tlvs)) { |
bd507085 CF |
2714 | goto out; |
2715 | } | |
bf555bf0 CF |
2716 | if (!unpacked_known_tlvs) { |
2717 | isis_free_subtlvs(rv->subtlvs); | |
2718 | rv->subtlvs = NULL; | |
2719 | } | |
7ef5fefc CF |
2720 | } |
2721 | ||
2722 | append_item(items, (struct isis_item *)rv); | |
2723 | return 0; | |
2724 | out: | |
2725 | if (rv) | |
2726 | free_item_extended_ip_reach((struct isis_item *)rv); | |
2727 | return 1; | |
2728 | } | |
2729 | ||
2730 | /* Functions related to TLV 137 Dynamic Hostname */ | |
2731 | ||
2732 | static char *copy_tlv_dynamic_hostname(const char *hostname) | |
2733 | { | |
2734 | if (!hostname) | |
2735 | return NULL; | |
2736 | ||
841791b6 | 2737 | return XSTRDUP(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
2738 | } |
2739 | ||
2740 | static void format_tlv_dynamic_hostname(const char *hostname, struct sbuf *buf, | |
a2cac12a | 2741 | struct json_object *json, int indent) |
7ef5fefc CF |
2742 | { |
2743 | if (!hostname) | |
2744 | return; | |
2745 | ||
a2cac12a JG |
2746 | if (json) |
2747 | json_object_string_add(json, "hostname", hostname); | |
2748 | else | |
2749 | sbuf_push(buf, indent, "Hostname: %s\n", hostname); | |
7ef5fefc CF |
2750 | } |
2751 | ||
2752 | static void free_tlv_dynamic_hostname(char *hostname) | |
2753 | { | |
841791b6 | 2754 | XFREE(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
2755 | } |
2756 | ||
2757 | static int pack_tlv_dynamic_hostname(const char *hostname, struct stream *s) | |
2758 | { | |
2759 | if (!hostname) | |
2760 | return 0; | |
2761 | ||
2762 | uint8_t name_len = strlen(hostname); | |
2763 | ||
2764 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + name_len)) | |
2765 | return 1; | |
2766 | ||
2767 | stream_putc(s, ISIS_TLV_DYNAMIC_HOSTNAME); | |
2768 | stream_putc(s, name_len); | |
2769 | stream_put(s, hostname, name_len); | |
2770 | return 0; | |
2771 | } | |
2772 | ||
2773 | static int unpack_tlv_dynamic_hostname(enum isis_tlv_context context, | |
2774 | uint8_t tlv_type, uint8_t tlv_len, | |
2775 | struct stream *s, struct sbuf *log, | |
2776 | void *dest, int indent) | |
2777 | { | |
2778 | struct isis_tlvs *tlvs = dest; | |
2779 | ||
2780 | sbuf_push(log, indent, "Unpacking Dynamic Hostname TLV...\n"); | |
2781 | if (!tlv_len) { | |
2782 | sbuf_push(log, indent, "WARNING: No hostname included\n"); | |
2783 | return 0; | |
2784 | } | |
2785 | ||
2786 | if (tlvs->hostname) { | |
2787 | sbuf_push(log, indent, | |
2788 | "WARNING: Hostname present multiple times.\n"); | |
2789 | stream_forward_getp(s, tlv_len); | |
2790 | return 0; | |
2791 | } | |
2792 | ||
841791b6 | 2793 | tlvs->hostname = XCALLOC(MTYPE_ISIS_TLV, tlv_len + 1); |
7ef5fefc CF |
2794 | stream_get(tlvs->hostname, s, tlv_len); |
2795 | tlvs->hostname[tlv_len] = '\0'; | |
2796 | ||
2797 | bool sane = true; | |
2798 | for (uint8_t i = 0; i < tlv_len; i++) { | |
2799 | if ((unsigned char)tlvs->hostname[i] > 127 | |
fefa5e0f | 2800 | || !isprint((unsigned char)tlvs->hostname[i])) { |
7ef5fefc CF |
2801 | sane = false; |
2802 | tlvs->hostname[i] = '?'; | |
2803 | } | |
2804 | } | |
2805 | if (!sane) { | |
2806 | sbuf_push( | |
2807 | log, indent, | |
2808 | "WARNING: Hostname contained non-printable/non-ascii characters.\n"); | |
2809 | } | |
2810 | ||
2811 | return 0; | |
2812 | } | |
2813 | ||
173f8887 OD |
2814 | /* Functions related to TLV 140 IPv6 TE Router ID */ |
2815 | ||
2816 | static struct in6_addr *copy_tlv_te_router_id_ipv6(const struct in6_addr *id) | |
2817 | { | |
2818 | if (!id) | |
2819 | return NULL; | |
2820 | ||
2821 | struct in6_addr *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2822 | memcpy(rv, id, sizeof(*rv)); | |
2823 | return rv; | |
2824 | } | |
2825 | ||
2826 | static void format_tlv_te_router_id_ipv6(const struct in6_addr *id, | |
a2cac12a JG |
2827 | struct sbuf *buf, |
2828 | struct json_object *json, int indent) | |
173f8887 OD |
2829 | { |
2830 | if (!id) | |
2831 | return; | |
2832 | ||
2833 | char addrbuf[INET6_ADDRSTRLEN]; | |
2834 | inet_ntop(AF_INET6, id, addrbuf, sizeof(addrbuf)); | |
a2cac12a JG |
2835 | if (json) |
2836 | json_object_string_add(json, "ipv6-te-router-id", addrbuf); | |
2837 | else | |
2838 | sbuf_push(buf, indent, "IPv6 TE Router ID: %s\n", addrbuf); | |
173f8887 OD |
2839 | } |
2840 | ||
2841 | static void free_tlv_te_router_id_ipv6(struct in6_addr *id) | |
2842 | { | |
2843 | XFREE(MTYPE_ISIS_TLV, id); | |
2844 | } | |
2845 | ||
2846 | static int pack_tlv_te_router_id_ipv6(const struct in6_addr *id, | |
2847 | struct stream *s) | |
2848 | { | |
2849 | if (!id) | |
2850 | return 0; | |
2851 | ||
2852 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + sizeof(*id))) | |
2853 | return 1; | |
2854 | ||
2855 | stream_putc(s, ISIS_TLV_TE_ROUTER_ID_IPV6); | |
2856 | stream_putc(s, IPV6_MAX_BYTELEN); | |
2857 | stream_put(s, id, IPV6_MAX_BYTELEN); | |
2858 | return 0; | |
2859 | } | |
2860 | ||
2861 | static int unpack_tlv_te_router_id_ipv6(enum isis_tlv_context context, | |
2862 | uint8_t tlv_type, uint8_t tlv_len, | |
2863 | struct stream *s, struct sbuf *log, | |
2864 | void *dest, int indent) | |
2865 | { | |
2866 | struct isis_tlvs *tlvs = dest; | |
2867 | ||
2868 | sbuf_push(log, indent, "Unpacking IPv6 TE Router ID TLV...\n"); | |
2869 | if (tlv_len != IPV6_MAX_BYTELEN) { | |
2870 | sbuf_push(log, indent, "WARNING: Length invalid\n"); | |
2871 | return 1; | |
2872 | } | |
2873 | ||
2874 | if (tlvs->te_router_id_ipv6) { | |
2875 | sbuf_push( | |
2876 | log, indent, | |
2877 | "WARNING: IPv6 TE Router ID present multiple times.\n"); | |
2878 | stream_forward_getp(s, tlv_len); | |
2879 | return 0; | |
2880 | } | |
2881 | ||
2882 | tlvs->te_router_id_ipv6 = XCALLOC(MTYPE_ISIS_TLV, IPV6_MAX_BYTELEN); | |
2883 | stream_get(tlvs->te_router_id_ipv6, s, IPV6_MAX_BYTELEN); | |
a2cac12a | 2884 | format_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6, log, NULL, indent + 2); |
173f8887 OD |
2885 | return 0; |
2886 | } | |
2887 | ||
2888 | ||
41a145f1 CF |
2889 | /* Functions related to TLV 150 Spine-Leaf-Extension */ |
2890 | ||
2891 | static struct isis_spine_leaf *copy_tlv_spine_leaf( | |
2892 | const struct isis_spine_leaf *spine_leaf) | |
2893 | { | |
2894 | if (!spine_leaf) | |
2895 | return NULL; | |
2896 | ||
2897 | struct isis_spine_leaf *rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2898 | memcpy(rv, spine_leaf, sizeof(*rv)); | |
2899 | ||
2900 | return rv; | |
2901 | } | |
2902 | ||
2903 | static void format_tlv_spine_leaf(const struct isis_spine_leaf *spine_leaf, | |
a2cac12a JG |
2904 | struct sbuf *buf, struct json_object *json, |
2905 | int indent) | |
41a145f1 CF |
2906 | { |
2907 | if (!spine_leaf) | |
2908 | return; | |
2909 | ||
a2cac12a JG |
2910 | char aux_buf[255]; |
2911 | ||
2912 | if (json) { | |
2913 | struct json_object *spine_json; | |
2914 | spine_json = json_object_new_object(); | |
2915 | json_object_object_add(json, "spine-leaf-extension", | |
2916 | spine_json); | |
2917 | if (spine_leaf->has_tier) { | |
2918 | snprintfrr(aux_buf, sizeof(aux_buf), "%hhu", | |
2919 | spine_leaf->tier); | |
2920 | json_object_string_add( | |
2921 | spine_json, "tier", | |
2922 | (spine_leaf->tier == ISIS_TIER_UNDEFINED) | |
2923 | ? "undefined" | |
2924 | : aux_buf); | |
2925 | } | |
2926 | json_object_string_add(spine_json, "flag-leaf", | |
2927 | spine_leaf->is_leaf ? "yes" : ""); | |
2928 | json_object_string_add(spine_json, "flag-spine", | |
2929 | spine_leaf->is_spine ? "yes" : ""); | |
2930 | json_object_string_add(spine_json, "flag-backup", | |
2931 | spine_leaf->is_backup ? "yes" : ""); | |
2932 | } else { | |
2933 | sbuf_push(buf, indent, "Spine-Leaf-Extension:\n"); | |
2934 | if (spine_leaf->has_tier) { | |
2935 | if (spine_leaf->tier == ISIS_TIER_UNDEFINED) { | |
2936 | sbuf_push(buf, indent, " Tier: undefined\n"); | |
2937 | } else { | |
2938 | sbuf_push(buf, indent, " Tier: %hhu\n", | |
2939 | spine_leaf->tier); | |
2940 | } | |
41a145f1 | 2941 | } |
41a145f1 | 2942 | |
a2cac12a JG |
2943 | sbuf_push(buf, indent, " Flags:%s%s%s\n", |
2944 | spine_leaf->is_leaf ? " LEAF" : "", | |
2945 | spine_leaf->is_spine ? " SPINE" : "", | |
2946 | spine_leaf->is_backup ? " BACKUP" : ""); | |
2947 | } | |
41a145f1 CF |
2948 | } |
2949 | ||
2950 | static void free_tlv_spine_leaf(struct isis_spine_leaf *spine_leaf) | |
2951 | { | |
2952 | XFREE(MTYPE_ISIS_TLV, spine_leaf); | |
2953 | } | |
2954 | ||
2955 | #define ISIS_SPINE_LEAF_FLAG_TIER 0x08 | |
2956 | #define ISIS_SPINE_LEAF_FLAG_BACKUP 0x04 | |
2957 | #define ISIS_SPINE_LEAF_FLAG_SPINE 0x02 | |
2958 | #define ISIS_SPINE_LEAF_FLAG_LEAF 0x01 | |
2959 | ||
2960 | static int pack_tlv_spine_leaf(const struct isis_spine_leaf *spine_leaf, | |
2961 | struct stream *s) | |
2962 | { | |
2963 | if (!spine_leaf) | |
2964 | return 0; | |
2965 | ||
2966 | uint8_t tlv_len = 2; | |
2967 | ||
2968 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + tlv_len)) | |
2969 | return 1; | |
2970 | ||
2971 | stream_putc(s, ISIS_TLV_SPINE_LEAF_EXT); | |
2972 | stream_putc(s, tlv_len); | |
2973 | ||
2974 | uint16_t spine_leaf_flags = 0; | |
2975 | ||
2976 | if (spine_leaf->has_tier) { | |
2977 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_TIER; | |
2978 | spine_leaf_flags |= spine_leaf->tier << 12; | |
2979 | } | |
2980 | ||
2981 | if (spine_leaf->is_leaf) | |
2982 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_LEAF; | |
2983 | ||
2984 | if (spine_leaf->is_spine) | |
2985 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_SPINE; | |
2986 | ||
2987 | if (spine_leaf->is_backup) | |
2988 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_BACKUP; | |
2989 | ||
2990 | stream_putw(s, spine_leaf_flags); | |
2991 | ||
2992 | return 0; | |
2993 | } | |
2994 | ||
2995 | static int unpack_tlv_spine_leaf(enum isis_tlv_context context, | |
2996 | uint8_t tlv_type, uint8_t tlv_len, | |
2997 | struct stream *s, struct sbuf *log, | |
2998 | void *dest, int indent) | |
2999 | { | |
3000 | struct isis_tlvs *tlvs = dest; | |
3001 | ||
3002 | sbuf_push(log, indent, "Unpacking Spine Leaf Extension TLV...\n"); | |
3003 | if (tlv_len < 2) { | |
377e2dd3 | 3004 | sbuf_push(log, indent, "WARNING: Unexpected TLV size\n"); |
41a145f1 CF |
3005 | stream_forward_getp(s, tlv_len); |
3006 | return 0; | |
3007 | } | |
3008 | ||
3009 | if (tlvs->spine_leaf) { | |
3010 | sbuf_push(log, indent, | |
3011 | "WARNING: Spine Leaf Extension TLV present multiple times.\n"); | |
3012 | stream_forward_getp(s, tlv_len); | |
3013 | return 0; | |
3014 | } | |
3015 | ||
3016 | tlvs->spine_leaf = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->spine_leaf)); | |
3017 | ||
3018 | uint16_t spine_leaf_flags = stream_getw(s); | |
3019 | ||
3020 | if (spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_TIER) { | |
3021 | tlvs->spine_leaf->has_tier = true; | |
3022 | tlvs->spine_leaf->tier = spine_leaf_flags >> 12; | |
3023 | } | |
3024 | ||
3025 | tlvs->spine_leaf->is_leaf = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_LEAF; | |
3026 | tlvs->spine_leaf->is_spine = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_SPINE; | |
3027 | tlvs->spine_leaf->is_backup = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_BACKUP; | |
3028 | ||
3029 | stream_forward_getp(s, tlv_len - 2); | |
3030 | return 0; | |
3031 | } | |
3032 | ||
9fe21208 CF |
3033 | /* Functions related to TLV 240 P2P Three-Way Adjacency */ |
3034 | ||
3035 | const char *isis_threeway_state_name(enum isis_threeway_state state) | |
3036 | { | |
3037 | switch (state) { | |
3038 | case ISIS_THREEWAY_DOWN: | |
3039 | return "Down"; | |
3040 | case ISIS_THREEWAY_INITIALIZING: | |
3041 | return "Initializing"; | |
3042 | case ISIS_THREEWAY_UP: | |
3043 | return "Up"; | |
3044 | default: | |
3045 | return "Invalid!"; | |
3046 | } | |
3047 | } | |
3048 | ||
3049 | static struct isis_threeway_adj *copy_tlv_threeway_adj( | |
3050 | const struct isis_threeway_adj *threeway_adj) | |
3051 | { | |
3052 | if (!threeway_adj) | |
3053 | return NULL; | |
3054 | ||
3055 | struct isis_threeway_adj *rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
3056 | memcpy(rv, threeway_adj, sizeof(*rv)); | |
3057 | ||
3058 | return rv; | |
3059 | } | |
3060 | ||
a2cac12a JG |
3061 | static void |
3062 | format_tlv_threeway_adj(const struct isis_threeway_adj *threeway_adj, | |
3063 | struct sbuf *buf, struct json_object *json, int indent) | |
9fe21208 CF |
3064 | { |
3065 | if (!threeway_adj) | |
3066 | return; | |
3067 | ||
a2cac12a JG |
3068 | if (json) { |
3069 | struct json_object *three_json; | |
3070 | three_json = json_object_new_object(); | |
3071 | json_object_object_add(json, "p2p-three-way-adj", three_json); | |
3072 | json_object_string_add( | |
3073 | three_json, "state-name", | |
3074 | isis_threeway_state_name(threeway_adj->state)); | |
3075 | json_object_int_add(three_json, "state", threeway_adj->state); | |
3076 | json_object_int_add(three_json, "ext-local-circuit-id", | |
3077 | threeway_adj->local_circuit_id); | |
3078 | if (!threeway_adj->neighbor_set) | |
3079 | return; | |
3080 | json_object_string_add( | |
3081 | three_json, "neigh-system-id", | |
3082 | isis_format_id(threeway_adj->neighbor_id, 6)); | |
3083 | json_object_int_add(three_json, "neigh-ext-circuit-id", | |
3084 | threeway_adj->neighbor_circuit_id); | |
3085 | } else { | |
3086 | sbuf_push(buf, indent, "P2P Three-Way Adjacency:\n"); | |
3087 | sbuf_push(buf, indent, " State: %s (%d)\n", | |
3088 | isis_threeway_state_name(threeway_adj->state), | |
3089 | threeway_adj->state); | |
3090 | sbuf_push(buf, indent, " Extended Local Circuit ID: %u\n", | |
3091 | threeway_adj->local_circuit_id); | |
3092 | if (!threeway_adj->neighbor_set) | |
3093 | return; | |
9fe21208 | 3094 | |
a2cac12a JG |
3095 | sbuf_push(buf, indent, " Neighbor System ID: %s\n", |
3096 | isis_format_id(threeway_adj->neighbor_id, 6)); | |
3097 | sbuf_push(buf, indent, " Neighbor Extended Circuit ID: %u\n", | |
3098 | threeway_adj->neighbor_circuit_id); | |
3099 | } | |
9fe21208 CF |
3100 | } |
3101 | ||
3102 | static void free_tlv_threeway_adj(struct isis_threeway_adj *threeway_adj) | |
3103 | { | |
3104 | XFREE(MTYPE_ISIS_TLV, threeway_adj); | |
3105 | } | |
3106 | ||
3107 | static int pack_tlv_threeway_adj(const struct isis_threeway_adj *threeway_adj, | |
3108 | struct stream *s) | |
3109 | { | |
3110 | if (!threeway_adj) | |
3111 | return 0; | |
3112 | ||
3113 | uint8_t tlv_len = (threeway_adj->neighbor_set) ? 15 : 5; | |
3114 | ||
3115 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + tlv_len)) | |
3116 | return 1; | |
3117 | ||
3118 | stream_putc(s, ISIS_TLV_THREE_WAY_ADJ); | |
3119 | stream_putc(s, tlv_len); | |
3120 | stream_putc(s, threeway_adj->state); | |
3121 | stream_putl(s, threeway_adj->local_circuit_id); | |
3122 | ||
3123 | if (threeway_adj->neighbor_set) { | |
3124 | stream_put(s, threeway_adj->neighbor_id, 6); | |
3125 | stream_putl(s, threeway_adj->neighbor_circuit_id); | |
3126 | } | |
3127 | ||
3128 | return 0; | |
3129 | } | |
3130 | ||
3131 | static int unpack_tlv_threeway_adj(enum isis_tlv_context context, | |
3132 | uint8_t tlv_type, uint8_t tlv_len, | |
3133 | struct stream *s, struct sbuf *log, | |
3134 | void *dest, int indent) | |
3135 | { | |
3136 | struct isis_tlvs *tlvs = dest; | |
3137 | ||
3138 | sbuf_push(log, indent, "Unpacking P2P Three-Way Adjacency TLV...\n"); | |
3139 | if (tlv_len != 5 && tlv_len != 15) { | |
377e2dd3 | 3140 | sbuf_push(log, indent, "WARNING: Unexpected TLV size\n"); |
9fe21208 CF |
3141 | stream_forward_getp(s, tlv_len); |
3142 | return 0; | |
3143 | } | |
3144 | ||
3145 | if (tlvs->threeway_adj) { | |
3146 | sbuf_push(log, indent, | |
3147 | "WARNING: P2P Three-Way Adjacency TLV present multiple times.\n"); | |
3148 | stream_forward_getp(s, tlv_len); | |
3149 | return 0; | |
3150 | } | |
3151 | ||
3152 | tlvs->threeway_adj = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->threeway_adj)); | |
3153 | ||
3154 | tlvs->threeway_adj->state = stream_getc(s); | |
3155 | tlvs->threeway_adj->local_circuit_id = stream_getl(s); | |
3156 | ||
3157 | if (tlv_len == 15) { | |
3158 | tlvs->threeway_adj->neighbor_set = true; | |
3159 | stream_get(tlvs->threeway_adj->neighbor_id, s, 6); | |
3160 | tlvs->threeway_adj->neighbor_circuit_id = stream_getl(s); | |
3161 | } | |
3162 | ||
3163 | return 0; | |
3164 | } | |
3165 | ||
7ef5fefc | 3166 | /* Functions related to TLVs 236/237 IPv6/MT-IPv6 reach */ |
7ef5fefc CF |
3167 | static struct isis_item *copy_item_ipv6_reach(struct isis_item *i) |
3168 | { | |
3169 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
841791b6 | 3170 | struct isis_ipv6_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
a064a7b8 | 3171 | |
7ef5fefc CF |
3172 | rv->metric = r->metric; |
3173 | rv->down = r->down; | |
3174 | rv->external = r->external; | |
3175 | rv->prefix = r->prefix; | |
3176 | rv->subtlvs = copy_subtlvs(r->subtlvs); | |
3177 | ||
3178 | return (struct isis_item *)rv; | |
3179 | } | |
3180 | ||
3181 | static void format_item_ipv6_reach(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
3182 | struct sbuf *buf, struct json_object *json, |
3183 | int indent) | |
7ef5fefc CF |
3184 | { |
3185 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
3186 | char prefixbuf[PREFIX2STR_BUFFER]; | |
3187 | ||
a2cac12a JG |
3188 | if (json) { |
3189 | struct json_object *reach_json; | |
3190 | reach_json = json_object_new_object(); | |
3191 | json_object_object_add(json, "ipv6-reach", reach_json); | |
3192 | json_object_string_add(reach_json, "mt-id", | |
3193 | (mtid == ISIS_MT_IPV4_UNICAST) ? "" | |
3194 | : "mt"); | |
3195 | json_object_string_add( | |
3196 | reach_json, "prefix", | |
3197 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf))); | |
3198 | json_object_int_add(reach_json, "metric", r->metric); | |
3199 | json_object_string_add(reach_json, "down", | |
3200 | r->down ? "yes" : ""); | |
3201 | json_object_string_add(reach_json, "external", | |
3202 | r->external ? "yes" : ""); | |
3203 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
3204 | json_object_string_add(reach_json, "mt-name", | |
3205 | isis_mtid2str(mtid)); | |
3206 | if (r->subtlvs) { | |
3207 | struct json_object *subtlvs_json; | |
3208 | subtlvs_json = json_object_new_object(); | |
3209 | json_object_object_add(json, "subtlvs", subtlvs_json); | |
3210 | format_subtlvs(r->subtlvs, NULL, subtlvs_json, 0); | |
3211 | } | |
3212 | } else { | |
3213 | sbuf_push(buf, indent, | |
3214 | "%sIPv6 Reachability: %s (Metric: %u)%s%s", | |
3215 | (mtid == ISIS_MT_IPV4_UNICAST) ? "" : "MT ", | |
3216 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), | |
3217 | r->metric, r->down ? " Down" : "", | |
3218 | r->external ? " External" : ""); | |
3219 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
3220 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
3221 | sbuf_push(buf, 0, "\n"); | |
3222 | ||
3223 | if (r->subtlvs) { | |
3224 | sbuf_push(buf, indent, " Subtlvs:\n"); | |
3225 | format_subtlvs(r->subtlvs, buf, NULL, indent + 4); | |
3226 | } | |
7ef5fefc CF |
3227 | } |
3228 | } | |
3229 | ||
3230 | static void free_item_ipv6_reach(struct isis_item *i) | |
3231 | { | |
3232 | struct isis_ipv6_reach *item = (struct isis_ipv6_reach *)i; | |
3233 | ||
3234 | isis_free_subtlvs(item->subtlvs); | |
841791b6 | 3235 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
3236 | } |
3237 | ||
7ce31bab DS |
3238 | static int pack_item_ipv6_reach(struct isis_item *i, struct stream *s, |
3239 | size_t *min_len) | |
7ef5fefc CF |
3240 | { |
3241 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
3242 | uint8_t control; | |
3243 | ||
7ce31bab DS |
3244 | if (STREAM_WRITEABLE(s) < 6 + (unsigned)PSIZE(r->prefix.prefixlen)) { |
3245 | *min_len = 6 + (unsigned)PSIZE(r->prefix.prefixlen); | |
7ef5fefc | 3246 | return 1; |
7ce31bab | 3247 | } |
7ef5fefc CF |
3248 | stream_putl(s, r->metric); |
3249 | ||
3250 | control = r->down ? ISIS_IPV6_REACH_DOWN : 0; | |
3251 | control |= r->external ? ISIS_IPV6_REACH_EXTERNAL : 0; | |
3252 | control |= r->subtlvs ? ISIS_IPV6_REACH_SUBTLV : 0; | |
3253 | ||
3254 | stream_putc(s, control); | |
3255 | stream_putc(s, r->prefix.prefixlen); | |
3256 | ||
7ef5fefc CF |
3257 | stream_put(s, &r->prefix.prefix.s6_addr, PSIZE(r->prefix.prefixlen)); |
3258 | ||
3259 | if (r->subtlvs) | |
3260 | return pack_subtlvs(r->subtlvs, s); | |
3261 | ||
3262 | return 0; | |
3263 | } | |
3264 | ||
3265 | static int unpack_item_ipv6_reach(uint16_t mtid, uint8_t len, struct stream *s, | |
3266 | struct sbuf *log, void *dest, int indent) | |
3267 | { | |
3268 | struct isis_tlvs *tlvs = dest; | |
3269 | struct isis_ipv6_reach *rv = NULL; | |
3270 | size_t consume; | |
3271 | uint8_t control, subtlv_len; | |
3272 | struct isis_item_list *items; | |
3273 | ||
3274 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
3275 | items = &tlvs->ipv6_reach; | |
3276 | } else { | |
3277 | items = isis_get_mt_items(&tlvs->mt_ipv6_reach, mtid); | |
3278 | } | |
3279 | ||
3280 | sbuf_push(log, indent, "Unpacking %sIPv6 reachability...\n", | |
3281 | (mtid == ISIS_MT_IPV4_UNICAST) ? "" : "mt "); | |
3282 | consume = 6; | |
3283 | if (len < consume) { | |
98c5bc15 | 3284 | sbuf_push(log, indent, |
6cde4b45 | 3285 | "Not enough data left. (expected 6 or more bytes, got %hhu)\n", |
98c5bc15 | 3286 | len); |
7ef5fefc CF |
3287 | goto out; |
3288 | } | |
3289 | ||
841791b6 | 3290 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
3291 | |
3292 | rv->metric = stream_getl(s); | |
3293 | control = stream_getc(s); | |
3294 | rv->down = (control & ISIS_IPV6_REACH_DOWN); | |
3295 | rv->external = (control & ISIS_IPV6_REACH_EXTERNAL); | |
3296 | ||
3297 | rv->prefix.family = AF_INET6; | |
3298 | rv->prefix.prefixlen = stream_getc(s); | |
13ccce6e | 3299 | if (rv->prefix.prefixlen > IPV6_MAX_BITLEN) { |
1b3f47d0 | 3300 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv6\n", |
7ef5fefc CF |
3301 | rv->prefix.prefixlen); |
3302 | goto out; | |
3303 | } | |
3304 | ||
3305 | consume += PSIZE(rv->prefix.prefixlen); | |
3306 | if (len < consume) { | |
98c5bc15 CF |
3307 | sbuf_push(log, indent, |
3308 | "Expected %u bytes of prefix, but only %u bytes available.\n", | |
3309 | PSIZE(rv->prefix.prefixlen), len - 6); | |
7ef5fefc CF |
3310 | goto out; |
3311 | } | |
3312 | stream_get(&rv->prefix.prefix.s6_addr, s, PSIZE(rv->prefix.prefixlen)); | |
3313 | struct in6_addr orig_prefix = rv->prefix.prefix; | |
1b3f47d0 | 3314 | |
7ef5fefc CF |
3315 | apply_mask_ipv6(&rv->prefix); |
3316 | if (memcmp(&orig_prefix, &rv->prefix.prefix, sizeof(orig_prefix))) | |
3317 | sbuf_push(log, indent + 2, | |
3318 | "WARNING: Prefix had hostbits set.\n"); | |
a2cac12a | 3319 | format_item_ipv6_reach(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
3320 | |
3321 | if (control & ISIS_IPV6_REACH_SUBTLV) { | |
3322 | consume += 1; | |
3323 | if (len < consume) { | |
98c5bc15 CF |
3324 | sbuf_push(log, indent, |
3325 | "Expected 1 byte of subtlv len, but no more data persent.\n"); | |
7ef5fefc CF |
3326 | goto out; |
3327 | } | |
3328 | subtlv_len = stream_getc(s); | |
3329 | ||
3330 | if (!subtlv_len) { | |
98c5bc15 CF |
3331 | sbuf_push(log, indent + 2, |
3332 | " WARNING: subtlv bit set, but there are no subtlvs.\n"); | |
7ef5fefc CF |
3333 | } |
3334 | consume += subtlv_len; | |
3335 | if (len < consume) { | |
98c5bc15 | 3336 | sbuf_push(log, indent, |
6cde4b45 | 3337 | "Expected %hhu bytes of subtlvs, but only %u bytes available.\n", |
98c5bc15 CF |
3338 | subtlv_len, |
3339 | len - 6 - PSIZE(rv->prefix.prefixlen)); | |
7ef5fefc CF |
3340 | goto out; |
3341 | } | |
3342 | ||
bd507085 | 3343 | rv->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH); |
bf555bf0 CF |
3344 | bool unpacked_known_tlvs = false; |
3345 | ||
7ef5fefc | 3346 | if (unpack_tlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH, subtlv_len, s, |
bf555bf0 | 3347 | log, rv->subtlvs, indent + 4, &unpacked_known_tlvs)) { |
7ef5fefc CF |
3348 | goto out; |
3349 | } | |
bf555bf0 CF |
3350 | if (!unpacked_known_tlvs) { |
3351 | isis_free_subtlvs(rv->subtlvs); | |
3352 | rv->subtlvs = NULL; | |
3353 | } | |
7ef5fefc CF |
3354 | } |
3355 | ||
3356 | append_item(items, (struct isis_item *)rv); | |
3357 | return 0; | |
3358 | out: | |
3359 | if (rv) | |
3360 | free_item_ipv6_reach((struct isis_item *)rv); | |
3361 | return 1; | |
3362 | } | |
3363 | ||
f2333421 | 3364 | /* Functions related to TLV 242 Router Capability as per RFC7981 */ |
1b3f47d0 OD |
3365 | static struct isis_router_cap *copy_tlv_router_cap( |
3366 | const struct isis_router_cap *router_cap) | |
3367 | { | |
a064a7b8 | 3368 | struct isis_router_cap *rv; |
1b3f47d0 OD |
3369 | |
3370 | if (!router_cap) | |
3371 | return NULL; | |
3372 | ||
a064a7b8 DS |
3373 | rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
3374 | ||
1b3f47d0 OD |
3375 | memcpy(rv, router_cap, sizeof(*rv)); |
3376 | ||
3377 | return rv; | |
3378 | } | |
3379 | ||
a2cac12a JG |
3380 | static void format_tlv_router_cap_json(const struct isis_router_cap *router_cap, |
3381 | struct json_object *json) | |
3382 | { | |
3383 | char addrbuf[INET_ADDRSTRLEN]; | |
3384 | ||
3385 | if (!router_cap) | |
3386 | return; | |
3387 | ||
3388 | /* Router ID and Flags */ | |
3389 | struct json_object *cap_json; | |
3390 | cap_json = json_object_new_object(); | |
3391 | json_object_object_add(json, "router-capability", cap_json); | |
3392 | inet_ntop(AF_INET, &router_cap->router_id, addrbuf, sizeof(addrbuf)); | |
3393 | json_object_string_add(cap_json, "id", addrbuf); | |
3394 | json_object_string_add( | |
3395 | cap_json, "flag-d", | |
3396 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_D ? "1" : "0"); | |
3397 | json_object_string_add( | |
3398 | cap_json, "flag-s", | |
3399 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_S ? "1" : "0"); | |
3400 | ||
3401 | /* Segment Routing Global Block as per RFC8667 section #3.1 */ | |
3402 | if (router_cap->srgb.range_size != 0) { | |
3403 | struct json_object *gb_json; | |
3404 | gb_json = json_object_new_object(); | |
3405 | json_object_object_add(json, "segment-routing-gb", gb_json); | |
3406 | json_object_string_add(gb_json, "ipv4", | |
3407 | IS_SR_IPV4(&router_cap->srgb) ? "1" | |
3408 | : "0"); | |
3409 | json_object_string_add(gb_json, "ipv6", | |
3410 | IS_SR_IPV6(&router_cap->srgb) ? "1" | |
3411 | : "0"); | |
3412 | json_object_int_add(gb_json, "global-block-base", | |
3413 | router_cap->srgb.lower_bound); | |
3414 | json_object_int_add(gb_json, "global-block-range", | |
3415 | router_cap->srgb.range_size); | |
3416 | } | |
3417 | ||
3418 | /* Segment Routing Local Block as per RFC8667 section #3.3 */ | |
3419 | if (router_cap->srlb.range_size != 0) { | |
3420 | struct json_object *lb_json; | |
3421 | lb_json = json_object_new_object(); | |
3422 | json_object_object_add(json, "segment-routing-lb", lb_json); | |
3423 | json_object_int_add(lb_json, "global-block-base", | |
3424 | router_cap->srlb.lower_bound); | |
3425 | json_object_int_add(lb_json, "global-block-range", | |
3426 | router_cap->srlb.range_size); | |
3427 | } | |
3428 | ||
3429 | /* Segment Routing Algorithms as per RFC8667 section #3.2 */ | |
3430 | if (router_cap->algo[0] != SR_ALGORITHM_UNSET) { | |
3431 | char buf[255]; | |
3432 | struct json_object *alg_json; | |
3433 | alg_json = json_object_new_object(); | |
3434 | json_object_object_add(json, "segment-routing-algorithm", | |
3435 | alg_json); | |
3436 | for (int i = 0; i < SR_ALGORITHM_COUNT; i++) | |
3437 | if (router_cap->algo[i] != SR_ALGORITHM_UNSET) { | |
3438 | snprintfrr(buf, sizeof(buf), "%d", i); | |
3439 | json_object_string_add(alg_json, buf, | |
3440 | router_cap->algo[i] == 0 | |
3441 | ? "SPF" | |
3442 | : "Strict SPF"); | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | /* Segment Routing Node MSD as per RFC8491 section #2 */ | |
3447 | if (router_cap->msd != 0) | |
3448 | json_object_int_add(json, "msd", router_cap->msd); | |
3449 | } | |
3450 | ||
1b3f47d0 OD |
3451 | static void format_tlv_router_cap(const struct isis_router_cap *router_cap, |
3452 | struct sbuf *buf, int indent) | |
3453 | { | |
3454 | char addrbuf[INET_ADDRSTRLEN]; | |
3455 | ||
3456 | if (!router_cap) | |
3457 | return; | |
3458 | ||
3459 | /* Router ID and Flags */ | |
3460 | inet_ntop(AF_INET, &router_cap->router_id, addrbuf, sizeof(addrbuf)); | |
3461 | sbuf_push(buf, indent, "Router Capability:"); | |
3462 | sbuf_push(buf, indent, " %s , D:%c, S:%c\n", addrbuf, | |
3463 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_D ? '1' : '0', | |
3464 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_S ? '1' : '0'); | |
3465 | ||
f2333421 | 3466 | /* Segment Routing Global Block as per RFC8667 section #3.1 */ |
1b3f47d0 | 3467 | if (router_cap->srgb.range_size != 0) |
d8391312 OD |
3468 | sbuf_push( |
3469 | buf, indent, | |
3470 | " Segment Routing: I:%s V:%s, Global Block Base: %u Range: %u\n", | |
d47d6089 RW |
3471 | IS_SR_IPV4(&router_cap->srgb) ? "1" : "0", |
3472 | IS_SR_IPV6(&router_cap->srgb) ? "1" : "0", | |
1b3f47d0 OD |
3473 | router_cap->srgb.lower_bound, |
3474 | router_cap->srgb.range_size); | |
3475 | ||
d8391312 OD |
3476 | /* Segment Routing Local Block as per RFC8667 section #3.3 */ |
3477 | if (router_cap->srlb.range_size != 0) | |
3478 | sbuf_push(buf, indent, " SR Local Block Base: %u Range: %u\n", | |
3479 | router_cap->srlb.lower_bound, | |
3480 | router_cap->srlb.range_size); | |
3481 | ||
f2333421 | 3482 | /* Segment Routing Algorithms as per RFC8667 section #3.2 */ |
1b3f47d0 | 3483 | if (router_cap->algo[0] != SR_ALGORITHM_UNSET) { |
d8391312 OD |
3484 | sbuf_push(buf, indent, " SR Algorithm:\n"); |
3485 | for (int i = 0; i < SR_ALGORITHM_COUNT; i++) | |
1b3f47d0 | 3486 | if (router_cap->algo[i] != SR_ALGORITHM_UNSET) |
d8391312 OD |
3487 | sbuf_push(buf, indent, " %u: %s\n", i, |
3488 | router_cap->algo[i] == 0 | |
3489 | ? "SPF" | |
3490 | : "Strict SPF"); | |
1b3f47d0 OD |
3491 | } |
3492 | ||
f2333421 | 3493 | /* Segment Routing Node MSD as per RFC8491 section #2 */ |
1b3f47d0 | 3494 | if (router_cap->msd != 0) |
d8391312 OD |
3495 | sbuf_push(buf, indent, " Node Maximum SID Depth: %u\n", |
3496 | router_cap->msd); | |
1b3f47d0 OD |
3497 | } |
3498 | ||
3499 | static void free_tlv_router_cap(struct isis_router_cap *router_cap) | |
3500 | { | |
3501 | XFREE(MTYPE_ISIS_TLV, router_cap); | |
3502 | } | |
3503 | ||
3504 | static int pack_tlv_router_cap(const struct isis_router_cap *router_cap, | |
3505 | struct stream *s) | |
3506 | { | |
3507 | size_t tlv_len = ISIS_ROUTER_CAP_SIZE; | |
3508 | size_t len_pos; | |
3509 | uint8_t nb_algo; | |
3510 | ||
3511 | if (!router_cap) | |
3512 | return 0; | |
3513 | ||
3514 | /* Compute Maximum TLV size */ | |
3515 | tlv_len += ISIS_SUBTLV_SID_LABEL_RANGE_SIZE | |
3516 | + ISIS_SUBTLV_HDR_SIZE | |
3517 | + ISIS_SUBTLV_ALGORITHM_SIZE | |
3518 | + ISIS_SUBTLV_NODE_MSD_SIZE; | |
3519 | ||
3520 | if (STREAM_WRITEABLE(s) < (unsigned int)(2 + tlv_len)) | |
3521 | return 1; | |
3522 | ||
3523 | /* Add Router Capability TLV 242 with Router ID and Flags */ | |
3524 | stream_putc(s, ISIS_TLV_ROUTER_CAPABILITY); | |
3525 | /* Real length will be adjusted later */ | |
3526 | len_pos = stream_get_endp(s); | |
3527 | stream_putc(s, tlv_len); | |
3528 | stream_put_ipv4(s, router_cap->router_id.s_addr); | |
3529 | stream_putc(s, router_cap->flags); | |
3530 | ||
f2333421 | 3531 | /* Add SRGB if set as per RFC8667 section #3.1 */ |
1b3f47d0 OD |
3532 | if ((router_cap->srgb.range_size != 0) |
3533 | && (router_cap->srgb.lower_bound != 0)) { | |
3534 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_RANGE); | |
3535 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_RANGE_SIZE); | |
3536 | stream_putc(s, router_cap->srgb.flags); | |
3537 | stream_put3(s, router_cap->srgb.range_size); | |
3538 | stream_putc(s, ISIS_SUBTLV_SID_LABEL); | |
3539 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_SIZE); | |
3540 | stream_put3(s, router_cap->srgb.lower_bound); | |
3541 | ||
f2333421 | 3542 | /* Then SR Algorithm if set as per RFC8667 section #3.2 */ |
1b3f47d0 OD |
3543 | for (nb_algo = 0; nb_algo < SR_ALGORITHM_COUNT; nb_algo++) |
3544 | if (router_cap->algo[nb_algo] == SR_ALGORITHM_UNSET) | |
3545 | break; | |
3546 | if (nb_algo > 0) { | |
3547 | stream_putc(s, ISIS_SUBTLV_ALGORITHM); | |
3548 | stream_putc(s, nb_algo); | |
3549 | for (int i = 0; i < nb_algo; i++) | |
3550 | stream_putc(s, router_cap->algo[i]); | |
3551 | } | |
d8391312 OD |
3552 | |
3553 | /* Local Block if defined as per RFC8667 section #3.3 */ | |
3554 | if ((router_cap->srlb.range_size != 0) | |
3555 | && (router_cap->srlb.lower_bound != 0)) { | |
3556 | stream_putc(s, ISIS_SUBTLV_SRLB); | |
3557 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_RANGE_SIZE); | |
3558 | /* No Flags are defined for SRLB */ | |
3559 | stream_putc(s, 0); | |
3560 | stream_put3(s, router_cap->srlb.range_size); | |
3561 | stream_putc(s, ISIS_SUBTLV_SID_LABEL); | |
3562 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_SIZE); | |
3563 | stream_put3(s, router_cap->srlb.lower_bound); | |
3564 | } | |
3565 | ||
f2333421 | 3566 | /* And finish with MSD if set as per RFC8491 section #2 */ |
1b3f47d0 OD |
3567 | if (router_cap->msd != 0) { |
3568 | stream_putc(s, ISIS_SUBTLV_NODE_MSD); | |
3569 | stream_putc(s, ISIS_SUBTLV_NODE_MSD_SIZE); | |
3570 | stream_putc(s, MSD_TYPE_BASE_MPLS_IMPOSITION); | |
3571 | stream_putc(s, router_cap->msd); | |
3572 | } | |
3573 | } | |
3574 | ||
3575 | /* Adjust TLV length which depends on subTLVs presence */ | |
3576 | tlv_len = stream_get_endp(s) - len_pos - 1; | |
3577 | stream_putc_at(s, len_pos, tlv_len); | |
3578 | ||
3579 | return 0; | |
3580 | } | |
3581 | ||
3582 | static int unpack_tlv_router_cap(enum isis_tlv_context context, | |
49efc80d DS |
3583 | uint8_t tlv_type, uint8_t tlv_len, |
3584 | struct stream *s, struct sbuf *log, void *dest, | |
3585 | int indent) | |
1b3f47d0 OD |
3586 | { |
3587 | struct isis_tlvs *tlvs = dest; | |
d8391312 | 3588 | struct isis_router_cap *rcap; |
1b3f47d0 OD |
3589 | uint8_t type; |
3590 | uint8_t length; | |
3591 | uint8_t subtlv_len; | |
e075df3a | 3592 | uint8_t size; |
1b3f47d0 OD |
3593 | |
3594 | sbuf_push(log, indent, "Unpacking Router Capability TLV...\n"); | |
3595 | if (tlv_len < ISIS_ROUTER_CAP_SIZE) { | |
3596 | sbuf_push(log, indent, "WARNING: Unexpected TLV size\n"); | |
3597 | stream_forward_getp(s, tlv_len); | |
3598 | return 0; | |
3599 | } | |
3600 | ||
3601 | if (tlvs->router_cap) { | |
3602 | sbuf_push(log, indent, | |
3603 | "WARNING: Router Capability TLV present multiple times.\n"); | |
3604 | stream_forward_getp(s, tlv_len); | |
3605 | return 0; | |
3606 | } | |
3607 | ||
3608 | /* Allocate router cap structure and initialize SR Algorithms */ | |
d8391312 | 3609 | rcap = XCALLOC(MTYPE_ISIS_TLV, sizeof(struct isis_router_cap)); |
1b3f47d0 | 3610 | for (int i = 0; i < SR_ALGORITHM_COUNT; i++) |
d8391312 | 3611 | rcap->algo[i] = SR_ALGORITHM_UNSET; |
1b3f47d0 OD |
3612 | |
3613 | /* Get Router ID and Flags */ | |
d8391312 OD |
3614 | rcap->router_id.s_addr = stream_get_ipv4(s); |
3615 | rcap->flags = stream_getc(s); | |
1b3f47d0 OD |
3616 | |
3617 | /* Parse remaining part of the TLV if present */ | |
3618 | subtlv_len = tlv_len - ISIS_ROUTER_CAP_SIZE; | |
3619 | while (subtlv_len > 2) { | |
1b3f47d0 OD |
3620 | uint8_t msd_type; |
3621 | ||
3622 | type = stream_getc(s); | |
3623 | length = stream_getc(s); | |
9ba865f5 JV |
3624 | |
3625 | if (length > STREAM_READABLE(s) || length > subtlv_len - 2) { | |
3626 | sbuf_push( | |
3627 | log, indent, | |
3628 | "WARNING: Router Capability subTLV length too large compared to expected size\n"); | |
3629 | stream_forward_getp(s, STREAM_READABLE(s)); | |
49efc80d | 3630 | XFREE(MTYPE_ISIS_TLV, rcap); |
9ba865f5 JV |
3631 | return 0; |
3632 | } | |
3633 | ||
1b3f47d0 OD |
3634 | switch (type) { |
3635 | case ISIS_SUBTLV_SID_LABEL_RANGE: | |
e075df3a OD |
3636 | /* Check that SRGB is correctly formated */ |
3637 | if (length < SUBTLV_RANGE_LABEL_SIZE | |
3638 | || length > SUBTLV_RANGE_INDEX_SIZE) { | |
3639 | stream_forward_getp(s, length); | |
9ba865f5 | 3640 | break; |
e075df3a | 3641 | } |
d8391312 OD |
3642 | /* Only one SRGB is supported. Skip subsequent one */ |
3643 | if (rcap->srgb.range_size != 0) { | |
3644 | stream_forward_getp(s, length); | |
9ba865f5 | 3645 | break; |
d8391312 OD |
3646 | } |
3647 | rcap->srgb.flags = stream_getc(s); | |
3648 | rcap->srgb.range_size = stream_get3(s); | |
1b3f47d0 OD |
3649 | /* Skip Type and get Length of SID Label */ |
3650 | stream_getc(s); | |
e075df3a | 3651 | size = stream_getc(s); |
9ba865f5 JV |
3652 | |
3653 | if (size == ISIS_SUBTLV_SID_LABEL_SIZE | |
3654 | && length != SUBTLV_RANGE_LABEL_SIZE) { | |
3655 | stream_forward_getp(s, length - 6); | |
3656 | break; | |
3657 | } | |
3658 | ||
3659 | if (size == ISIS_SUBTLV_SID_INDEX_SIZE | |
3660 | && length != SUBTLV_RANGE_INDEX_SIZE) { | |
3661 | stream_forward_getp(s, length - 6); | |
3662 | break; | |
3663 | } | |
3664 | ||
3665 | if (size == ISIS_SUBTLV_SID_LABEL_SIZE) { | |
d8391312 | 3666 | rcap->srgb.lower_bound = stream_get3(s); |
9ba865f5 | 3667 | } else if (size == ISIS_SUBTLV_SID_INDEX_SIZE) { |
d8391312 | 3668 | rcap->srgb.lower_bound = stream_getl(s); |
9ba865f5 JV |
3669 | } else { |
3670 | stream_forward_getp(s, length - 6); | |
3671 | break; | |
3672 | } | |
1b3f47d0 OD |
3673 | |
3674 | /* SRGB sanity checks. */ | |
d8391312 OD |
3675 | if (rcap->srgb.range_size == 0 |
3676 | || (rcap->srgb.lower_bound <= MPLS_LABEL_RESERVED_MAX) | |
3677 | || ((rcap->srgb.lower_bound + rcap->srgb.range_size - 1) | |
1b3f47d0 OD |
3678 | > MPLS_LABEL_UNRESERVED_MAX)) { |
3679 | sbuf_push(log, indent, "Invalid label range. Reset SRGB\n"); | |
d8391312 OD |
3680 | rcap->srgb.lower_bound = 0; |
3681 | rcap->srgb.range_size = 0; | |
1b3f47d0 | 3682 | } |
e075df3a OD |
3683 | /* Only one range is supported. Skip subsequent one */ |
3684 | size = length - (size + SUBTLV_SR_BLOCK_SIZE); | |
3685 | if (size > 0) | |
9ba865f5 JV |
3686 | stream_forward_getp(s, size); |
3687 | ||
1b3f47d0 OD |
3688 | break; |
3689 | case ISIS_SUBTLV_ALGORITHM: | |
9ba865f5 JV |
3690 | if (length == 0) |
3691 | break; | |
1b3f47d0 | 3692 | /* Only 2 algorithms are supported: SPF & Strict SPF */ |
d8391312 | 3693 | stream_get(&rcap->algo, s, |
1b3f47d0 OD |
3694 | length > SR_ALGORITHM_COUNT |
3695 | ? SR_ALGORITHM_COUNT | |
3696 | : length); | |
3697 | if (length > SR_ALGORITHM_COUNT) | |
3698 | stream_forward_getp( | |
3699 | s, length - SR_ALGORITHM_COUNT); | |
3700 | break; | |
d8391312 | 3701 | case ISIS_SUBTLV_SRLB: |
e075df3a OD |
3702 | /* Check that SRLB is correctly formated */ |
3703 | if (length < SUBTLV_RANGE_LABEL_SIZE | |
3704 | || length > SUBTLV_RANGE_INDEX_SIZE) { | |
3705 | stream_forward_getp(s, length); | |
9ba865f5 | 3706 | break; |
e075df3a | 3707 | } |
d8391312 OD |
3708 | /* RFC 8667 section #3.3: Only one SRLB is authorized */ |
3709 | if (rcap->srlb.range_size != 0) { | |
3710 | stream_forward_getp(s, length); | |
9ba865f5 | 3711 | break; |
d8391312 OD |
3712 | } |
3713 | /* Ignore Flags which are not defined */ | |
3714 | stream_getc(s); | |
3715 | rcap->srlb.range_size = stream_get3(s); | |
3716 | /* Skip Type and get Length of SID Label */ | |
3717 | stream_getc(s); | |
e075df3a | 3718 | size = stream_getc(s); |
9ba865f5 JV |
3719 | |
3720 | if (size == ISIS_SUBTLV_SID_LABEL_SIZE | |
3721 | && length != SUBTLV_RANGE_LABEL_SIZE) { | |
3722 | stream_forward_getp(s, length - 6); | |
3723 | break; | |
3724 | } | |
3725 | ||
3726 | if (size == ISIS_SUBTLV_SID_INDEX_SIZE | |
3727 | && length != SUBTLV_RANGE_INDEX_SIZE) { | |
3728 | stream_forward_getp(s, length - 6); | |
3729 | break; | |
3730 | } | |
3731 | ||
3732 | if (size == ISIS_SUBTLV_SID_LABEL_SIZE) { | |
d8391312 | 3733 | rcap->srlb.lower_bound = stream_get3(s); |
9ba865f5 | 3734 | } else if (size == ISIS_SUBTLV_SID_INDEX_SIZE) { |
d8391312 | 3735 | rcap->srlb.lower_bound = stream_getl(s); |
9ba865f5 JV |
3736 | } else { |
3737 | stream_forward_getp(s, length - 6); | |
3738 | break; | |
3739 | } | |
d8391312 OD |
3740 | |
3741 | /* SRLB sanity checks. */ | |
3742 | if (rcap->srlb.range_size == 0 | |
3743 | || (rcap->srlb.lower_bound <= MPLS_LABEL_RESERVED_MAX) | |
3744 | || ((rcap->srlb.lower_bound + rcap->srlb.range_size - 1) | |
3745 | > MPLS_LABEL_UNRESERVED_MAX)) { | |
3746 | sbuf_push(log, indent, "Invalid label range. Reset SRLB\n"); | |
3747 | rcap->srlb.lower_bound = 0; | |
3748 | rcap->srlb.range_size = 0; | |
3749 | } | |
e075df3a OD |
3750 | /* Only one range is supported. Skip subsequent one */ |
3751 | size = length - (size + SUBTLV_SR_BLOCK_SIZE); | |
3752 | if (size > 0) | |
9ba865f5 JV |
3753 | stream_forward_getp(s, size); |
3754 | ||
d8391312 | 3755 | break; |
1b3f47d0 | 3756 | case ISIS_SUBTLV_NODE_MSD: |
e075df3a OD |
3757 | /* Check that MSD is correctly formated */ |
3758 | if (length < MSD_TLV_SIZE) { | |
3759 | stream_forward_getp(s, length); | |
9ba865f5 | 3760 | break; |
e075df3a | 3761 | } |
1b3f47d0 | 3762 | msd_type = stream_getc(s); |
d8391312 | 3763 | rcap->msd = stream_getc(s); |
1b3f47d0 OD |
3764 | /* Only BMI-MSD type has been defined in RFC 8491 */ |
3765 | if (msd_type != MSD_TYPE_BASE_MPLS_IMPOSITION) | |
d8391312 | 3766 | rcap->msd = 0; |
e075df3a OD |
3767 | /* Only one MSD is standardized. Skip others */ |
3768 | if (length > MSD_TLV_SIZE) | |
3769 | stream_forward_getp(s, length - MSD_TLV_SIZE); | |
1b3f47d0 OD |
3770 | break; |
3771 | default: | |
3772 | stream_forward_getp(s, length); | |
3773 | break; | |
3774 | } | |
3775 | subtlv_len = subtlv_len - length - 2; | |
3776 | } | |
d8391312 | 3777 | tlvs->router_cap = rcap; |
1b3f47d0 OD |
3778 | return 0; |
3779 | } | |
3780 | ||
7ef5fefc CF |
3781 | /* Functions related to TLV 10 Authentication */ |
3782 | static struct isis_item *copy_item_auth(struct isis_item *i) | |
3783 | { | |
3784 | struct isis_auth *auth = (struct isis_auth *)i; | |
841791b6 | 3785 | struct isis_auth *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
3786 | |
3787 | rv->type = auth->type; | |
3788 | rv->length = auth->length; | |
3789 | memcpy(rv->value, auth->value, sizeof(rv->value)); | |
3790 | return (struct isis_item *)rv; | |
3791 | } | |
3792 | ||
3793 | static void format_item_auth(uint16_t mtid, struct isis_item *i, | |
a2cac12a JG |
3794 | struct sbuf *buf, struct json_object *json, |
3795 | int indent) | |
7ef5fefc CF |
3796 | { |
3797 | struct isis_auth *auth = (struct isis_auth *)i; | |
3798 | char obuf[768]; | |
3799 | ||
a2cac12a JG |
3800 | if (json) |
3801 | json_object_string_add(json, "test-auth", "ok"); | |
3802 | else | |
3803 | sbuf_push(buf, indent, "Authentication:\n"); | |
7ef5fefc CF |
3804 | switch (auth->type) { |
3805 | case ISIS_PASSWD_TYPE_CLEARTXT: | |
3806 | zlog_sanitize(obuf, sizeof(obuf), auth->value, auth->length); | |
a2cac12a JG |
3807 | if (json) |
3808 | json_object_string_add(json, "auth-pass", obuf); | |
3809 | else | |
3810 | sbuf_push(buf, indent, " Password: %s\n", obuf); | |
7ef5fefc CF |
3811 | break; |
3812 | case ISIS_PASSWD_TYPE_HMAC_MD5: | |
f7813c7c | 3813 | for (unsigned int j = 0; j < 16; j++) { |
a2cac12a JG |
3814 | snprintf(obuf + 2 * j, sizeof(obuf) - 2 * j, "%02hhx", |
3815 | auth->value[j]); | |
7ef5fefc | 3816 | } |
a2cac12a JG |
3817 | if (json) |
3818 | json_object_string_add(json, "auth-hmac-md5", obuf); | |
3819 | else | |
3820 | sbuf_push(buf, indent, " HMAC-MD5: %s\n", obuf); | |
7ef5fefc CF |
3821 | break; |
3822 | default: | |
a2cac12a JG |
3823 | if (json) |
3824 | json_object_int_add(json, "auth-unknown", auth->type); | |
3825 | else | |
3826 | sbuf_push(buf, indent, " Unknown (%hhu)\n", | |
3827 | auth->type); | |
7ef5fefc | 3828 | break; |
5b94ec50 | 3829 | } |
7ef5fefc CF |
3830 | } |
3831 | ||
3832 | static void free_item_auth(struct isis_item *i) | |
3833 | { | |
841791b6 | 3834 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
3835 | } |
3836 | ||
7ce31bab DS |
3837 | static int pack_item_auth(struct isis_item *i, struct stream *s, |
3838 | size_t *min_len) | |
7ef5fefc CF |
3839 | { |
3840 | struct isis_auth *auth = (struct isis_auth *)i; | |
3841 | ||
7ce31bab DS |
3842 | if (STREAM_WRITEABLE(s) < 1) { |
3843 | *min_len = 1; | |
7ef5fefc | 3844 | return 1; |
7ce31bab | 3845 | } |
7ef5fefc CF |
3846 | stream_putc(s, auth->type); |
3847 | ||
3848 | switch (auth->type) { | |
3849 | case ISIS_PASSWD_TYPE_CLEARTXT: | |
7ce31bab DS |
3850 | if (STREAM_WRITEABLE(s) < auth->length) { |
3851 | *min_len = 1 + auth->length; | |
7ef5fefc | 3852 | return 1; |
7ce31bab | 3853 | } |
7ef5fefc CF |
3854 | stream_put(s, auth->passwd, auth->length); |
3855 | break; | |
3856 | case ISIS_PASSWD_TYPE_HMAC_MD5: | |
7ce31bab DS |
3857 | if (STREAM_WRITEABLE(s) < 16) { |
3858 | *min_len = 1 + 16; | |
7ef5fefc | 3859 | return 1; |
7ce31bab | 3860 | } |
7ef5fefc CF |
3861 | auth->offset = stream_get_endp(s); |
3862 | stream_put(s, NULL, 16); | |
3863 | break; | |
3864 | default: | |
3865 | return 1; | |
3866 | } | |
3867 | ||
3868 | return 0; | |
3869 | } | |
3870 | ||
3871 | static int unpack_item_auth(uint16_t mtid, uint8_t len, struct stream *s, | |
3872 | struct sbuf *log, void *dest, int indent) | |
3873 | { | |
3874 | struct isis_tlvs *tlvs = dest; | |
3875 | ||
3876 | sbuf_push(log, indent, "Unpack Auth TLV...\n"); | |
3877 | if (len < 1) { | |
3878 | sbuf_push( | |
3879 | log, indent, | |
6cde4b45 | 3880 | "Not enough data left.(Expected 1 bytes of auth type, got %hhu)\n", |
7ef5fefc CF |
3881 | len); |
3882 | return 1; | |
3883 | } | |
3884 | ||
841791b6 | 3885 | struct isis_auth *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
3886 | |
3887 | rv->type = stream_getc(s); | |
3888 | rv->length = len - 1; | |
3889 | ||
3890 | if (rv->type == ISIS_PASSWD_TYPE_HMAC_MD5 && rv->length != 16) { | |
3891 | sbuf_push( | |
3892 | log, indent, | |
6cde4b45 | 3893 | "Unexpected auth length for HMAC-MD5 (expected 16, got %hhu)\n", |
7ef5fefc | 3894 | rv->length); |
841791b6 | 3895 | XFREE(MTYPE_ISIS_TLV, rv); |
7ef5fefc CF |
3896 | return 1; |
3897 | } | |
3898 | ||
3899 | rv->offset = stream_get_getp(s); | |
3900 | stream_get(rv->value, s, rv->length); | |
a2cac12a | 3901 | format_item_auth(mtid, (struct isis_item *)rv, log, NULL, indent + 2); |
7ef5fefc CF |
3902 | append_item(&tlvs->isis_auth, (struct isis_item *)rv); |
3903 | return 0; | |
3904 | } | |
3905 | ||
5f77d901 CF |
3906 | /* Functions related to TLV 13 Purge Originator */ |
3907 | ||
3908 | static struct isis_purge_originator *copy_tlv_purge_originator( | |
3909 | struct isis_purge_originator *poi) | |
3910 | { | |
3911 | if (!poi) | |
3912 | return NULL; | |
3913 | ||
3914 | struct isis_purge_originator *rv; | |
3915 | ||
3916 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
3917 | rv->sender_set = poi->sender_set; | |
3918 | memcpy(rv->generator, poi->generator, sizeof(rv->generator)); | |
3919 | if (poi->sender_set) | |
3920 | memcpy(rv->sender, poi->sender, sizeof(rv->sender)); | |
3921 | return rv; | |
3922 | } | |
3923 | ||
3924 | static void format_tlv_purge_originator(struct isis_purge_originator *poi, | |
a2cac12a JG |
3925 | struct sbuf *buf, |
3926 | struct json_object *json, int indent) | |
5f77d901 CF |
3927 | { |
3928 | if (!poi) | |
3929 | return; | |
3930 | ||
a2cac12a JG |
3931 | if (json) { |
3932 | struct json_object *purge_json; | |
3933 | purge_json = json_object_new_object(); | |
3934 | json_object_object_add(json, "purge_originator", purge_json); | |
3935 | ||
3936 | json_object_string_add( | |
3937 | purge_json, "id", | |
3938 | isis_format_id(poi->generator, sizeof(poi->generator))); | |
3939 | if (poi->sender_set) { | |
3940 | json_object_string_add( | |
3941 | purge_json, "rec-from", | |
3942 | isis_format_id(poi->sender, | |
3943 | sizeof(poi->sender))); | |
3944 | } | |
3945 | } else { | |
3946 | sbuf_push(buf, indent, "Purge Originator Identification:\n"); | |
3947 | sbuf_push( | |
3948 | buf, indent, " Generator: %s\n", | |
3949 | isis_format_id(poi->generator, sizeof(poi->generator))); | |
3950 | if (poi->sender_set) { | |
3951 | sbuf_push(buf, indent, " Received-From: %s\n", | |
3952 | isis_format_id(poi->sender, | |
3953 | sizeof(poi->sender))); | |
3954 | } | |
5f77d901 CF |
3955 | } |
3956 | } | |
3957 | ||
3958 | static void free_tlv_purge_originator(struct isis_purge_originator *poi) | |
3959 | { | |
3960 | XFREE(MTYPE_ISIS_TLV, poi); | |
3961 | } | |
3962 | ||
3963 | static int pack_tlv_purge_originator(struct isis_purge_originator *poi, | |
3964 | struct stream *s) | |
3965 | { | |
3966 | if (!poi) | |
3967 | return 0; | |
3968 | ||
3969 | uint8_t data_len = 1 + sizeof(poi->generator); | |
3970 | ||
3971 | if (poi->sender_set) | |
3972 | data_len += sizeof(poi->sender); | |
3973 | ||
3974 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + data_len)) | |
3975 | return 1; | |
3976 | ||
3977 | stream_putc(s, ISIS_TLV_PURGE_ORIGINATOR); | |
3978 | stream_putc(s, data_len); | |
3979 | stream_putc(s, poi->sender_set ? 2 : 1); | |
3980 | stream_put(s, poi->generator, sizeof(poi->generator)); | |
3981 | if (poi->sender_set) | |
3982 | stream_put(s, poi->sender, sizeof(poi->sender)); | |
3983 | return 0; | |
3984 | } | |
3985 | ||
3986 | static int unpack_tlv_purge_originator(enum isis_tlv_context context, | |
3987 | uint8_t tlv_type, uint8_t tlv_len, | |
3988 | struct stream *s, struct sbuf *log, | |
3989 | void *dest, int indent) | |
3990 | { | |
3991 | struct isis_tlvs *tlvs = dest; | |
3e300703 | 3992 | struct isis_purge_originator poi = {}; |
5f77d901 CF |
3993 | |
3994 | sbuf_push(log, indent, "Unpacking Purge Originator Identification TLV...\n"); | |
3995 | if (tlv_len < 7) { | |
6cde4b45 | 3996 | sbuf_push(log, indent, "Not enough data left. (Expected at least 7 bytes, got %hhu)\n", tlv_len); |
5f77d901 CF |
3997 | return 1; |
3998 | } | |
3999 | ||
4000 | uint8_t number_of_ids = stream_getc(s); | |
4001 | ||
4002 | if (number_of_ids == 1) { | |
4003 | poi.sender_set = false; | |
4004 | } else if (number_of_ids == 2) { | |
4005 | poi.sender_set = true; | |
4006 | } else { | |
6cde4b45 | 4007 | sbuf_push(log, indent, "Got invalid value for number of system IDs: %hhu)\n", number_of_ids); |
5f77d901 CF |
4008 | return 1; |
4009 | } | |
4010 | ||
4011 | if (tlv_len != 1 + 6 * number_of_ids) { | |
4012 | sbuf_push(log, indent, "Incorrect tlv len for number of IDs.\n"); | |
4013 | return 1; | |
4014 | } | |
4015 | ||
4016 | stream_get(poi.generator, s, sizeof(poi.generator)); | |
4017 | if (poi.sender_set) | |
4018 | stream_get(poi.sender, s, sizeof(poi.sender)); | |
4019 | ||
4020 | if (tlvs->purge_originator) { | |
4021 | sbuf_push(log, indent, | |
4022 | "WARNING: Purge originator present multiple times, ignoring.\n"); | |
4023 | return 0; | |
4024 | } | |
4025 | ||
4026 | tlvs->purge_originator = copy_tlv_purge_originator(&poi); | |
4027 | return 0; | |
4028 | } | |
4029 | ||
4030 | ||
7ef5fefc CF |
4031 | /* Functions relating to item TLVs */ |
4032 | ||
4033 | static void init_item_list(struct isis_item_list *items) | |
4034 | { | |
4035 | items->head = NULL; | |
4036 | items->tail = &items->head; | |
4037 | items->count = 0; | |
4038 | } | |
4039 | ||
4040 | static struct isis_item *copy_item(enum isis_tlv_context context, | |
4041 | enum isis_tlv_type type, | |
4042 | struct isis_item *item) | |
4043 | { | |
4044 | const struct tlv_ops *ops = tlv_table[context][type]; | |
4045 | ||
4046 | if (ops && ops->copy_item) | |
4047 | return ops->copy_item(item); | |
4048 | ||
4049 | assert(!"Unknown item tlv type!"); | |
4050 | return NULL; | |
4051 | } | |
4052 | ||
4053 | static void copy_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
4054 | struct isis_item_list *src, struct isis_item_list *dest) | |
4055 | { | |
4056 | struct isis_item *item; | |
4057 | ||
4058 | init_item_list(dest); | |
4059 | ||
4060 | for (item = src->head; item; item = item->next) { | |
4061 | append_item(dest, copy_item(context, type, item)); | |
4062 | } | |
4063 | } | |
4064 | ||
4065 | static void format_item(uint16_t mtid, enum isis_tlv_context context, | |
4066 | enum isis_tlv_type type, struct isis_item *i, | |
a2cac12a | 4067 | struct sbuf *buf, struct json_object *json, int indent) |
7ef5fefc CF |
4068 | { |
4069 | const struct tlv_ops *ops = tlv_table[context][type]; | |
4070 | ||
4071 | if (ops && ops->format_item) { | |
a2cac12a | 4072 | ops->format_item(mtid, i, buf, json, indent); |
7ef5fefc CF |
4073 | return; |
4074 | } | |
4075 | ||
4076 | assert(!"Unknown item tlv type!"); | |
4077 | } | |
4078 | ||
4079 | static void format_items_(uint16_t mtid, enum isis_tlv_context context, | |
4080 | enum isis_tlv_type type, struct isis_item_list *items, | |
a2cac12a JG |
4081 | struct sbuf *buf, struct json_object *json, |
4082 | int indent) | |
7ef5fefc CF |
4083 | { |
4084 | struct isis_item *i; | |
4085 | ||
4086 | for (i = items->head; i; i = i->next) | |
a2cac12a | 4087 | format_item(mtid, context, type, i, buf, json, indent); |
7ef5fefc | 4088 | } |
7ef5fefc CF |
4089 | |
4090 | static void free_item(enum isis_tlv_context tlv_context, | |
4091 | enum isis_tlv_type tlv_type, struct isis_item *item) | |
4092 | { | |
4093 | const struct tlv_ops *ops = tlv_table[tlv_context][tlv_type]; | |
4094 | ||
4095 | if (ops && ops->free_item) { | |
4096 | ops->free_item(item); | |
4097 | return; | |
4098 | } | |
4099 | ||
4100 | assert(!"Unknown item tlv type!"); | |
4101 | } | |
4102 | ||
4103 | static void free_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
4104 | struct isis_item_list *items) | |
4105 | { | |
4106 | struct isis_item *item, *next_item; | |
4107 | ||
4108 | for (item = items->head; item; item = next_item) { | |
4109 | next_item = item->next; | |
4110 | free_item(context, type, item); | |
4111 | } | |
4112 | } | |
4113 | ||
4114 | static int pack_item(enum isis_tlv_context context, enum isis_tlv_type type, | |
7ce31bab | 4115 | struct isis_item *i, struct stream *s, size_t *min_len, |
7ef5fefc | 4116 | struct isis_tlvs **fragment_tlvs, |
2b64873d | 4117 | const struct pack_order_entry *pe, uint16_t mtid) |
7ef5fefc CF |
4118 | { |
4119 | const struct tlv_ops *ops = tlv_table[context][type]; | |
4120 | ||
4121 | if (ops && ops->pack_item) { | |
7ce31bab | 4122 | return ops->pack_item(i, s, min_len); |
7ef5fefc CF |
4123 | } |
4124 | ||
4125 | assert(!"Unknown item tlv type!"); | |
4126 | return 1; | |
4127 | } | |
4128 | ||
2b64873d DL |
4129 | static void add_item_to_fragment(struct isis_item *i, |
4130 | const struct pack_order_entry *pe, | |
7ef5fefc CF |
4131 | struct isis_tlvs *fragment_tlvs, uint16_t mtid) |
4132 | { | |
4133 | struct isis_item_list *l; | |
4134 | ||
4135 | if (pe->how_to_pack == ISIS_ITEMS) { | |
98c5bc15 | 4136 | l = (struct isis_item_list *)(((char *)fragment_tlvs) + pe->what_to_pack); |
7ef5fefc CF |
4137 | } else { |
4138 | struct isis_mt_item_list *m; | |
98c5bc15 | 4139 | m = (struct isis_mt_item_list *)(((char *)fragment_tlvs) + pe->what_to_pack); |
7ef5fefc CF |
4140 | l = isis_get_mt_items(m, mtid); |
4141 | } | |
4142 | ||
4143 | append_item(l, copy_item(pe->context, pe->type, i)); | |
4144 | } | |
4145 | ||
4146 | static int pack_items_(uint16_t mtid, enum isis_tlv_context context, | |
4147 | enum isis_tlv_type type, struct isis_item_list *items, | |
4148 | struct stream *s, struct isis_tlvs **fragment_tlvs, | |
2b64873d | 4149 | const struct pack_order_entry *pe, |
7ef5fefc CF |
4150 | struct isis_tlvs *(*new_fragment)(struct list *l), |
4151 | struct list *new_fragment_arg) | |
4152 | { | |
4153 | size_t len_pos, last_len, len; | |
4154 | struct isis_item *item = NULL; | |
4155 | int rv; | |
7ce31bab | 4156 | size_t min_len = 0; |
7ef5fefc CF |
4157 | |
4158 | if (!items->head) | |
4159 | return 0; | |
4160 | ||
4161 | top: | |
4162 | if (STREAM_WRITEABLE(s) < 2) | |
4163 | goto too_long; | |
4164 | ||
4165 | stream_putc(s, type); | |
4166 | len_pos = stream_get_endp(s); | |
4167 | stream_putc(s, 0); /* Put 0 as length for now */ | |
4168 | ||
4169 | if (context == ISIS_CONTEXT_LSP && IS_COMPAT_MT_TLV(type) | |
4170 | && mtid != ISIS_MT_IPV4_UNICAST) { | |
4171 | if (STREAM_WRITEABLE(s) < 2) | |
4172 | goto too_long; | |
4173 | stream_putw(s, mtid); | |
4174 | } | |
4175 | ||
4176 | if (context == ISIS_CONTEXT_LSP && type == ISIS_TLV_OLDSTYLE_REACH) { | |
4177 | if (STREAM_WRITEABLE(s) < 1) | |
4178 | goto too_long; | |
4179 | stream_putc(s, 0); /* Virtual flag is set to 0 */ | |
4180 | } | |
4181 | ||
4182 | last_len = len = 0; | |
4183 | for (item = item ? item : items->head; item; item = item->next) { | |
7ce31bab DS |
4184 | rv = pack_item(context, type, item, s, &min_len, fragment_tlvs, |
4185 | pe, mtid); | |
7ef5fefc CF |
4186 | if (rv) |
4187 | goto too_long; | |
4188 | ||
4189 | len = stream_get_endp(s) - len_pos - 1; | |
4190 | ||
4191 | /* Multiple auths don't go into one TLV, so always break */ | |
4192 | if (context == ISIS_CONTEXT_LSP && type == ISIS_TLV_AUTH) { | |
4193 | item = item->next; | |
4194 | break; | |
4195 | } | |
4196 | ||
bd507085 CF |
4197 | /* Multiple prefix-sids don't go into one TLV, so always break */ |
4198 | if (type == ISIS_SUBTLV_PREFIX_SID | |
4199 | && (context == ISIS_CONTEXT_SUBTLV_IP_REACH | |
4200 | || context == ISIS_CONTEXT_SUBTLV_IPV6_REACH)) { | |
4201 | item = item->next; | |
4202 | break; | |
4203 | } | |
4204 | ||
7ef5fefc CF |
4205 | if (len > 255) { |
4206 | if (!last_len) /* strange, not a single item fit */ | |
4207 | return 1; | |
4208 | /* drop last tlv, otherwise, its too long */ | |
4209 | stream_set_endp(s, len_pos + 1 + last_len); | |
4210 | len = last_len; | |
4211 | break; | |
4212 | } | |
4213 | ||
4214 | if (fragment_tlvs) | |
4215 | add_item_to_fragment(item, pe, *fragment_tlvs, mtid); | |
4216 | ||
4217 | last_len = len; | |
4218 | } | |
4219 | ||
4220 | stream_putc_at(s, len_pos, len); | |
4221 | if (item) | |
4222 | goto top; | |
4223 | ||
4224 | return 0; | |
4225 | too_long: | |
4226 | if (!fragment_tlvs) | |
4227 | return 1; | |
4228 | stream_reset(s); | |
7ce31bab DS |
4229 | if (STREAM_WRITEABLE(s) < min_len) |
4230 | return 1; | |
7ef5fefc CF |
4231 | *fragment_tlvs = new_fragment(new_fragment_arg); |
4232 | goto top; | |
4233 | } | |
4234 | #define pack_items(...) pack_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) | |
4235 | ||
4236 | static void append_item(struct isis_item_list *dest, struct isis_item *item) | |
4237 | { | |
4238 | *dest->tail = item; | |
4239 | dest->tail = &(*dest->tail)->next; | |
4240 | dest->count++; | |
4241 | } | |
4242 | ||
1b3f47d0 OD |
4243 | static void delete_item(struct isis_item_list *dest, struct isis_item *del) |
4244 | { | |
4245 | struct isis_item *item, *prev = NULL, *next; | |
4246 | ||
4247 | /* Sanity Check */ | |
4248 | if ((dest == NULL) || (del == NULL)) | |
4249 | return; | |
4250 | ||
4251 | /* | |
4252 | * TODO: delete is tricky because "dest" is a singly linked list. | |
4253 | * We need to switch a doubly linked list. | |
4254 | */ | |
4255 | for (item = dest->head; item; item = next) { | |
4256 | if (item->next == del) { | |
4257 | prev = item; | |
4258 | break; | |
4259 | } | |
4260 | next = item->next; | |
4261 | } | |
4262 | if (prev) | |
4263 | prev->next = del->next; | |
4264 | if (dest->head == del) | |
4265 | dest->head = del->next; | |
4266 | if ((struct isis_item *)dest->tail == del) { | |
4267 | *dest->tail = prev; | |
4268 | if (prev) | |
4269 | dest->tail = &(*dest->tail)->next; | |
4270 | else | |
4271 | dest->tail = &dest->head; | |
4272 | } | |
4273 | dest->count--; | |
4274 | } | |
4275 | ||
d43d2df5 CF |
4276 | static struct isis_item *last_item(struct isis_item_list *list) |
4277 | { | |
4278 | return container_of(list->tail, struct isis_item, next); | |
4279 | } | |
4280 | ||
7ef5fefc CF |
4281 | static int unpack_item(uint16_t mtid, enum isis_tlv_context context, |
4282 | uint8_t tlv_type, uint8_t len, struct stream *s, | |
4283 | struct sbuf *log, void *dest, int indent) | |
4284 | { | |
4285 | const struct tlv_ops *ops = tlv_table[context][tlv_type]; | |
4286 | ||
4287 | if (ops && ops->unpack_item) | |
4288 | return ops->unpack_item(mtid, len, s, log, dest, indent); | |
4289 | ||
4290 | assert(!"Unknown item tlv type!"); | |
4291 | sbuf_push(log, indent, "Unknown item tlv type!\n"); | |
4292 | return 1; | |
4293 | } | |
4294 | ||
4295 | static int unpack_tlv_with_items(enum isis_tlv_context context, | |
4296 | uint8_t tlv_type, uint8_t tlv_len, | |
4297 | struct stream *s, struct sbuf *log, void *dest, | |
4298 | int indent) | |
4299 | { | |
4300 | size_t tlv_start; | |
4301 | size_t tlv_pos; | |
4302 | int rv; | |
4303 | uint16_t mtid; | |
4304 | ||
4305 | tlv_start = stream_get_getp(s); | |
4306 | tlv_pos = 0; | |
4307 | ||
4308 | if (context == ISIS_CONTEXT_LSP && IS_COMPAT_MT_TLV(tlv_type)) { | |
4309 | if (tlv_len < 2) { | |
4310 | sbuf_push(log, indent, | |
4311 | "TLV is too short to contain MTID\n"); | |
4312 | return 1; | |
4313 | } | |
4314 | mtid = stream_getw(s) & ISIS_MT_MASK; | |
4315 | tlv_pos += 2; | |
4316 | sbuf_push(log, indent, "Unpacking as MT %s item TLV...\n", | |
a15014f3 | 4317 | isis_mtid2str_fake(mtid)); |
7ef5fefc CF |
4318 | } else { |
4319 | sbuf_push(log, indent, "Unpacking as item TLV...\n"); | |
4320 | mtid = ISIS_MT_IPV4_UNICAST; | |
4321 | } | |
4322 | ||
4323 | if (context == ISIS_CONTEXT_LSP | |
4324 | && tlv_type == ISIS_TLV_OLDSTYLE_REACH) { | |
4325 | if (tlv_len - tlv_pos < 1) { | |
4326 | sbuf_push(log, indent, | |
4327 | "TLV is too short for old style reach\n"); | |
4328 | return 1; | |
4329 | } | |
4330 | stream_forward_getp(s, 1); | |
4331 | tlv_pos += 1; | |
4332 | } | |
4333 | ||
4334 | if (context == ISIS_CONTEXT_LSP | |
4335 | && tlv_type == ISIS_TLV_OLDSTYLE_IP_REACH) { | |
4336 | struct isis_tlvs *tlvs = dest; | |
4337 | dest = &tlvs->oldstyle_ip_reach; | |
4338 | } else if (context == ISIS_CONTEXT_LSP | |
4339 | && tlv_type == ISIS_TLV_OLDSTYLE_IP_REACH_EXT) { | |
4340 | struct isis_tlvs *tlvs = dest; | |
4341 | dest = &tlvs->oldstyle_ip_reach_ext; | |
4342 | } | |
4343 | ||
4344 | if (context == ISIS_CONTEXT_LSP | |
4345 | && tlv_type == ISIS_TLV_MT_ROUTER_INFO) { | |
4346 | struct isis_tlvs *tlvs = dest; | |
4347 | tlvs->mt_router_info_empty = (tlv_pos >= (size_t)tlv_len); | |
4348 | } | |
4349 | ||
4350 | while (tlv_pos < (size_t)tlv_len) { | |
4351 | rv = unpack_item(mtid, context, tlv_type, tlv_len - tlv_pos, s, | |
4352 | log, dest, indent + 2); | |
4353 | if (rv) | |
4354 | return rv; | |
4355 | ||
4356 | tlv_pos = stream_get_getp(s) - tlv_start; | |
4357 | } | |
4358 | ||
4359 | return 0; | |
4360 | } | |
4361 | ||
4362 | /* Functions to manipulate mt_item_lists */ | |
4363 | ||
4364 | static int isis_mt_item_list_cmp(const struct isis_item_list *a, | |
4365 | const struct isis_item_list *b) | |
4366 | { | |
4367 | if (a->mtid < b->mtid) | |
4368 | return -1; | |
4369 | if (a->mtid > b->mtid) | |
4370 | return 1; | |
4371 | return 0; | |
4372 | } | |
4373 | ||
4374 | RB_PROTOTYPE(isis_mt_item_list, isis_item_list, mt_tree, isis_mt_item_list_cmp); | |
4375 | RB_GENERATE(isis_mt_item_list, isis_item_list, mt_tree, isis_mt_item_list_cmp); | |
4376 | ||
4377 | struct isis_item_list *isis_get_mt_items(struct isis_mt_item_list *m, | |
4378 | uint16_t mtid) | |
4379 | { | |
4380 | struct isis_item_list *rv; | |
4381 | ||
4382 | rv = isis_lookup_mt_items(m, mtid); | |
4383 | if (!rv) { | |
4384 | rv = XCALLOC(MTYPE_ISIS_MT_ITEM_LIST, sizeof(*rv)); | |
4385 | init_item_list(rv); | |
4386 | rv->mtid = mtid; | |
4387 | RB_INSERT(isis_mt_item_list, m, rv); | |
4388 | } | |
4389 | ||
4390 | return rv; | |
4391 | } | |
4392 | ||
4393 | struct isis_item_list *isis_lookup_mt_items(struct isis_mt_item_list *m, | |
4394 | uint16_t mtid) | |
4395 | { | |
4396 | struct isis_item_list key = {.mtid = mtid}; | |
4397 | ||
4398 | return RB_FIND(isis_mt_item_list, m, &key); | |
4399 | } | |
4400 | ||
4401 | static void free_mt_items(enum isis_tlv_context context, | |
4402 | enum isis_tlv_type type, struct isis_mt_item_list *m) | |
4403 | { | |
4404 | struct isis_item_list *n, *nnext; | |
4405 | ||
a2addae8 | 4406 | RB_FOREACH_SAFE (n, isis_mt_item_list, m, nnext) { |
7ef5fefc CF |
4407 | free_items(context, type, n); |
4408 | RB_REMOVE(isis_mt_item_list, m, n); | |
4409 | XFREE(MTYPE_ISIS_MT_ITEM_LIST, n); | |
4410 | } | |
4411 | } | |
4412 | ||
4413 | static void format_mt_items(enum isis_tlv_context context, | |
4414 | enum isis_tlv_type type, | |
4415 | struct isis_mt_item_list *m, struct sbuf *buf, | |
a2cac12a | 4416 | struct json_object *json, int indent) |
7ef5fefc CF |
4417 | { |
4418 | struct isis_item_list *n; | |
4419 | ||
a2addae8 | 4420 | RB_FOREACH (n, isis_mt_item_list, m) { |
a2cac12a | 4421 | format_items_(n->mtid, context, type, n, buf, json, indent); |
7ef5fefc CF |
4422 | } |
4423 | } | |
4424 | ||
4425 | static int pack_mt_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
4426 | struct isis_mt_item_list *m, struct stream *s, | |
4427 | struct isis_tlvs **fragment_tlvs, | |
2b64873d | 4428 | const struct pack_order_entry *pe, |
7ef5fefc CF |
4429 | struct isis_tlvs *(*new_fragment)(struct list *l), |
4430 | struct list *new_fragment_arg) | |
4431 | { | |
4432 | struct isis_item_list *n; | |
4433 | ||
a2addae8 | 4434 | RB_FOREACH (n, isis_mt_item_list, m) { |
7ef5fefc CF |
4435 | int rv; |
4436 | ||
4437 | rv = pack_items_(n->mtid, context, type, n, s, fragment_tlvs, | |
4438 | pe, new_fragment, new_fragment_arg); | |
4439 | if (rv) | |
4440 | return rv; | |
4441 | } | |
4442 | ||
4443 | return 0; | |
4444 | } | |
4445 | ||
4446 | static void copy_mt_items(enum isis_tlv_context context, | |
4447 | enum isis_tlv_type type, | |
4448 | struct isis_mt_item_list *src, | |
4449 | struct isis_mt_item_list *dest) | |
4450 | { | |
4451 | struct isis_item_list *n; | |
4452 | ||
4453 | RB_INIT(isis_mt_item_list, dest); | |
4454 | ||
a2addae8 | 4455 | RB_FOREACH (n, isis_mt_item_list, src) { |
7ef5fefc CF |
4456 | copy_items(context, type, n, isis_get_mt_items(dest, n->mtid)); |
4457 | } | |
4458 | } | |
4459 | ||
4460 | /* Functions related to tlvs in general */ | |
4461 | ||
4462 | struct isis_tlvs *isis_alloc_tlvs(void) | |
4463 | { | |
4464 | struct isis_tlvs *result; | |
4465 | ||
841791b6 | 4466 | result = XCALLOC(MTYPE_ISIS_TLV, sizeof(*result)); |
7ef5fefc CF |
4467 | |
4468 | init_item_list(&result->isis_auth); | |
4469 | init_item_list(&result->area_addresses); | |
4470 | init_item_list(&result->mt_router_info); | |
4471 | init_item_list(&result->oldstyle_reach); | |
4472 | init_item_list(&result->lan_neighbor); | |
4473 | init_item_list(&result->lsp_entries); | |
4474 | init_item_list(&result->extended_reach); | |
4475 | RB_INIT(isis_mt_item_list, &result->mt_reach); | |
4476 | init_item_list(&result->oldstyle_ip_reach); | |
4477 | init_item_list(&result->oldstyle_ip_reach_ext); | |
4478 | init_item_list(&result->ipv4_address); | |
4479 | init_item_list(&result->ipv6_address); | |
173f8887 | 4480 | init_item_list(&result->global_ipv6_address); |
7ef5fefc CF |
4481 | init_item_list(&result->extended_ip_reach); |
4482 | RB_INIT(isis_mt_item_list, &result->mt_ip_reach); | |
4483 | init_item_list(&result->ipv6_reach); | |
4484 | RB_INIT(isis_mt_item_list, &result->mt_ipv6_reach); | |
4485 | ||
4486 | return result; | |
4487 | } | |
4488 | ||
4489 | struct isis_tlvs *isis_copy_tlvs(struct isis_tlvs *tlvs) | |
4490 | { | |
841791b6 | 4491 | struct isis_tlvs *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
4492 | |
4493 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth, | |
4494 | &rv->isis_auth); | |
4495 | ||
5f77d901 CF |
4496 | rv->purge_originator = |
4497 | copy_tlv_purge_originator(tlvs->purge_originator); | |
4498 | ||
7ef5fefc CF |
4499 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
4500 | &tlvs->area_addresses, &rv->area_addresses); | |
4501 | ||
4502 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
4503 | &tlvs->mt_router_info, &rv->mt_router_info); | |
4504 | ||
b9d4a380 | 4505 | rv->mt_router_info_empty = tlvs->mt_router_info_empty; |
7ef5fefc CF |
4506 | |
4507 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
4508 | &tlvs->oldstyle_reach, &rv->oldstyle_reach); | |
4509 | ||
4510 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
4511 | &tlvs->lan_neighbor, &rv->lan_neighbor); | |
4512 | ||
4513 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries, | |
4514 | &rv->lsp_entries); | |
4515 | ||
4516 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
4517 | &tlvs->extended_reach, &rv->extended_reach); | |
4518 | ||
4519 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach, | |
4520 | &rv->mt_reach); | |
4521 | ||
4522 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
4523 | &tlvs->oldstyle_ip_reach, &rv->oldstyle_ip_reach); | |
4524 | ||
4525 | copy_tlv_protocols_supported(&tlvs->protocols_supported, | |
4526 | &rv->protocols_supported); | |
4527 | ||
4528 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
4529 | &tlvs->oldstyle_ip_reach_ext, &rv->oldstyle_ip_reach_ext); | |
4530 | ||
4531 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, &tlvs->ipv4_address, | |
4532 | &rv->ipv4_address); | |
4533 | ||
4534 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, &tlvs->ipv6_address, | |
4535 | &rv->ipv6_address); | |
4536 | ||
173f8887 OD |
4537 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_GLOBAL_IPV6_ADDRESS, |
4538 | &tlvs->global_ipv6_address, &rv->global_ipv6_address); | |
4539 | ||
7ef5fefc CF |
4540 | rv->te_router_id = copy_tlv_te_router_id(tlvs->te_router_id); |
4541 | ||
173f8887 OD |
4542 | rv->te_router_id_ipv6 = |
4543 | copy_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6); | |
4544 | ||
7ef5fefc CF |
4545 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, |
4546 | &tlvs->extended_ip_reach, &rv->extended_ip_reach); | |
4547 | ||
4548 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
4549 | &tlvs->mt_ip_reach, &rv->mt_ip_reach); | |
4550 | ||
4551 | rv->hostname = copy_tlv_dynamic_hostname(tlvs->hostname); | |
4552 | ||
4553 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach, | |
4554 | &rv->ipv6_reach); | |
4555 | ||
4556 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
4557 | &tlvs->mt_ipv6_reach, &rv->mt_ipv6_reach); | |
4558 | ||
9fe21208 CF |
4559 | rv->threeway_adj = copy_tlv_threeway_adj(tlvs->threeway_adj); |
4560 | ||
1b3f47d0 OD |
4561 | rv->router_cap = copy_tlv_router_cap(tlvs->router_cap); |
4562 | ||
41a145f1 CF |
4563 | rv->spine_leaf = copy_tlv_spine_leaf(tlvs->spine_leaf); |
4564 | ||
7ef5fefc CF |
4565 | return rv; |
4566 | } | |
4567 | ||
a2cac12a | 4568 | static void format_tlvs(struct isis_tlvs *tlvs, struct sbuf *buf, struct json_object *json, int indent) |
7ef5fefc | 4569 | { |
a2cac12a JG |
4570 | format_tlv_protocols_supported(&tlvs->protocols_supported, buf, json, |
4571 | indent); | |
7ef5fefc CF |
4572 | |
4573 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth, buf, | |
a2cac12a | 4574 | json, indent); |
7ef5fefc | 4575 | |
a2cac12a | 4576 | format_tlv_purge_originator(tlvs->purge_originator, buf, json, indent); |
5f77d901 | 4577 | |
7ef5fefc | 4578 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
a2cac12a | 4579 | &tlvs->area_addresses, buf, json, indent); |
7ef5fefc CF |
4580 | |
4581 | if (tlvs->mt_router_info_empty) { | |
a2cac12a JG |
4582 | if (json) |
4583 | json_object_string_add(json, "mt-router-info", "none"); | |
4584 | else | |
4585 | sbuf_push(buf, indent, "MT Router Info: None\n"); | |
7ef5fefc CF |
4586 | } else { |
4587 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
a2cac12a | 4588 | &tlvs->mt_router_info, buf, json, indent); |
7ef5fefc CF |
4589 | } |
4590 | ||
4591 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
a2cac12a | 4592 | &tlvs->oldstyle_reach, buf, json, indent); |
7ef5fefc CF |
4593 | |
4594 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
a2cac12a | 4595 | &tlvs->lan_neighbor, buf, json, indent); |
7ef5fefc CF |
4596 | |
4597 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries, | |
a2cac12a | 4598 | buf, json, indent); |
7ef5fefc | 4599 | |
a2cac12a JG |
4600 | format_tlv_dynamic_hostname(tlvs->hostname, buf, json, indent); |
4601 | format_tlv_te_router_id(tlvs->te_router_id, buf, json, indent); | |
4602 | format_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6, buf, json, | |
4603 | indent); | |
4604 | if (json) | |
4605 | format_tlv_router_cap_json(tlvs->router_cap, json); | |
4606 | else | |
4607 | format_tlv_router_cap(tlvs->router_cap, buf, indent); | |
7ef5fefc CF |
4608 | |
4609 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
a2cac12a | 4610 | &tlvs->extended_reach, buf, json, indent); |
7ef5fefc CF |
4611 | |
4612 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach, | |
a2cac12a | 4613 | buf, json, indent); |
7ef5fefc CF |
4614 | |
4615 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
a2cac12a | 4616 | &tlvs->oldstyle_ip_reach, buf, json, indent); |
7ef5fefc CF |
4617 | |
4618 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
a2cac12a | 4619 | &tlvs->oldstyle_ip_reach_ext, buf, json, indent); |
7ef5fefc CF |
4620 | |
4621 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, | |
a2cac12a | 4622 | &tlvs->ipv4_address, buf, json, indent); |
7ef5fefc CF |
4623 | |
4624 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, | |
a2cac12a | 4625 | &tlvs->ipv6_address, buf, json, indent); |
7ef5fefc | 4626 | |
173f8887 | 4627 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_GLOBAL_IPV6_ADDRESS, |
a2cac12a | 4628 | &tlvs->global_ipv6_address, buf, json, indent); |
173f8887 | 4629 | |
7ef5fefc | 4630 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, |
a2cac12a | 4631 | &tlvs->extended_ip_reach, buf, json, indent); |
7ef5fefc CF |
4632 | |
4633 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
a2cac12a | 4634 | &tlvs->mt_ip_reach, buf, json, indent); |
7ef5fefc CF |
4635 | |
4636 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach, | |
a2cac12a | 4637 | buf, json, indent); |
7ef5fefc CF |
4638 | |
4639 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
a2cac12a | 4640 | &tlvs->mt_ipv6_reach, buf, json, indent); |
9fe21208 | 4641 | |
a2cac12a | 4642 | format_tlv_threeway_adj(tlvs->threeway_adj, buf, json, indent); |
41a145f1 | 4643 | |
a2cac12a | 4644 | format_tlv_spine_leaf(tlvs->spine_leaf, buf, json, indent); |
7ef5fefc CF |
4645 | } |
4646 | ||
a2cac12a | 4647 | const char *isis_format_tlvs(struct isis_tlvs *tlvs, struct json_object *json) |
7ef5fefc | 4648 | { |
a2cac12a JG |
4649 | if (json) { |
4650 | format_tlvs(tlvs, NULL, json, 0); | |
4651 | return NULL; | |
4652 | } else { | |
4653 | static struct sbuf buf; | |
7ef5fefc | 4654 | |
a2cac12a JG |
4655 | if (!sbuf_buf(&buf)) |
4656 | sbuf_init(&buf, NULL, 0); | |
7ef5fefc | 4657 | |
a2cac12a JG |
4658 | sbuf_reset(&buf); |
4659 | format_tlvs(tlvs, &buf, NULL, 0); | |
4660 | return sbuf_buf(&buf); | |
4661 | } | |
7ef5fefc CF |
4662 | } |
4663 | ||
4664 | void isis_free_tlvs(struct isis_tlvs *tlvs) | |
4665 | { | |
4666 | if (!tlvs) | |
4667 | return; | |
4668 | ||
4669 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth); | |
5f77d901 | 4670 | free_tlv_purge_originator(tlvs->purge_originator); |
7ef5fefc CF |
4671 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
4672 | &tlvs->area_addresses); | |
4673 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
4674 | &tlvs->mt_router_info); | |
4675 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
4676 | &tlvs->oldstyle_reach); | |
4677 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
4678 | &tlvs->lan_neighbor); | |
4679 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries); | |
4680 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
4681 | &tlvs->extended_reach); | |
4682 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach); | |
4683 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
4684 | &tlvs->oldstyle_ip_reach); | |
4685 | free_tlv_protocols_supported(&tlvs->protocols_supported); | |
4686 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
4687 | &tlvs->oldstyle_ip_reach_ext); | |
4688 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, | |
4689 | &tlvs->ipv4_address); | |
4690 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, | |
4691 | &tlvs->ipv6_address); | |
173f8887 OD |
4692 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_GLOBAL_IPV6_ADDRESS, |
4693 | &tlvs->global_ipv6_address); | |
7ef5fefc | 4694 | free_tlv_te_router_id(tlvs->te_router_id); |
173f8887 | 4695 | free_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6); |
7ef5fefc CF |
4696 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, |
4697 | &tlvs->extended_ip_reach); | |
4698 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
4699 | &tlvs->mt_ip_reach); | |
4700 | free_tlv_dynamic_hostname(tlvs->hostname); | |
4701 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach); | |
4702 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
4703 | &tlvs->mt_ipv6_reach); | |
9fe21208 | 4704 | free_tlv_threeway_adj(tlvs->threeway_adj); |
1b3f47d0 | 4705 | free_tlv_router_cap(tlvs->router_cap); |
41a145f1 | 4706 | free_tlv_spine_leaf(tlvs->spine_leaf); |
7ef5fefc | 4707 | |
841791b6 | 4708 | XFREE(MTYPE_ISIS_TLV, tlvs); |
7ef5fefc CF |
4709 | } |
4710 | ||
4711 | static void add_padding(struct stream *s) | |
4712 | { | |
4713 | while (STREAM_WRITEABLE(s)) { | |
4714 | if (STREAM_WRITEABLE(s) == 1) | |
4715 | break; | |
4716 | uint32_t padding_len = STREAM_WRITEABLE(s) - 2; | |
4717 | ||
4718 | if (padding_len > 255) { | |
4719 | if (padding_len == 256) | |
4720 | padding_len = 254; | |
4721 | else | |
4722 | padding_len = 255; | |
4723 | } | |
4724 | ||
4725 | stream_putc(s, ISIS_TLV_PADDING); | |
4726 | stream_putc(s, padding_len); | |
4727 | stream_put(s, NULL, padding_len); | |
4728 | } | |
4729 | } | |
4730 | ||
4731 | #define LSP_REM_LIFETIME_OFF 10 | |
4732 | #define LSP_CHECKSUM_OFF 24 | |
4733 | static void safe_auth_md5(struct stream *s, uint16_t *checksum, | |
4734 | uint16_t *rem_lifetime) | |
4735 | { | |
4736 | memcpy(rem_lifetime, STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, | |
4737 | sizeof(*rem_lifetime)); | |
4738 | memset(STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, 0, sizeof(*rem_lifetime)); | |
4739 | memcpy(checksum, STREAM_DATA(s) + LSP_CHECKSUM_OFF, sizeof(*checksum)); | |
4740 | memset(STREAM_DATA(s) + LSP_CHECKSUM_OFF, 0, sizeof(*checksum)); | |
4741 | } | |
4742 | ||
4743 | static void restore_auth_md5(struct stream *s, uint16_t checksum, | |
4744 | uint16_t rem_lifetime) | |
4745 | { | |
4746 | memcpy(STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, &rem_lifetime, | |
4747 | sizeof(rem_lifetime)); | |
4748 | memcpy(STREAM_DATA(s) + LSP_CHECKSUM_OFF, &checksum, sizeof(checksum)); | |
4749 | } | |
4750 | ||
4751 | static void update_auth_hmac_md5(struct isis_auth *auth, struct stream *s, | |
4752 | bool is_lsp) | |
4753 | { | |
4754 | uint8_t digest[16]; | |
4755 | uint16_t checksum, rem_lifetime; | |
4756 | ||
4757 | if (is_lsp) | |
4758 | safe_auth_md5(s, &checksum, &rem_lifetime); | |
4759 | ||
4760 | memset(STREAM_DATA(s) + auth->offset, 0, 16); | |
6252100f MR |
4761 | #ifdef CRYPTO_OPENSSL |
4762 | uint8_t *result = (uint8_t *)HMAC(EVP_md5(), auth->passwd, | |
4763 | auth->plength, STREAM_DATA(s), | |
4764 | stream_get_endp(s), NULL, NULL); | |
4765 | ||
4766 | memcpy(digest, result, 16); | |
4767 | #elif CRYPTO_INTERNAL | |
7ef5fefc CF |
4768 | hmac_md5(STREAM_DATA(s), stream_get_endp(s), auth->passwd, |
4769 | auth->plength, digest); | |
6252100f | 4770 | #endif |
7ef5fefc CF |
4771 | memcpy(auth->value, digest, 16); |
4772 | memcpy(STREAM_DATA(s) + auth->offset, digest, 16); | |
4773 | ||
4774 | if (is_lsp) | |
4775 | restore_auth_md5(s, checksum, rem_lifetime); | |
4776 | } | |
4777 | ||
4778 | static void update_auth(struct isis_tlvs *tlvs, struct stream *s, bool is_lsp) | |
4779 | { | |
4780 | struct isis_auth *auth_head = (struct isis_auth *)tlvs->isis_auth.head; | |
4781 | ||
4782 | for (struct isis_auth *auth = auth_head; auth; auth = auth->next) { | |
4783 | if (auth->type == ISIS_PASSWD_TYPE_HMAC_MD5) | |
4784 | update_auth_hmac_md5(auth, s, is_lsp); | |
4785 | } | |
4786 | } | |
4787 | ||
2b64873d | 4788 | static int handle_pack_entry(const struct pack_order_entry *pe, |
7ef5fefc CF |
4789 | struct isis_tlvs *tlvs, struct stream *stream, |
4790 | struct isis_tlvs **fragment_tlvs, | |
4791 | struct isis_tlvs *(*new_fragment)(struct list *l), | |
4792 | struct list *new_fragment_arg) | |
4793 | { | |
4794 | int rv; | |
4795 | ||
4796 | if (pe->how_to_pack == ISIS_ITEMS) { | |
4797 | struct isis_item_list *l; | |
4798 | l = (struct isis_item_list *)(((char *)tlvs) | |
4799 | + pe->what_to_pack); | |
4800 | rv = pack_items(pe->context, pe->type, l, stream, fragment_tlvs, | |
4801 | pe, new_fragment, new_fragment_arg); | |
4802 | } else { | |
4803 | struct isis_mt_item_list *l; | |
4804 | l = (struct isis_mt_item_list *)(((char *)tlvs) | |
4805 | + pe->what_to_pack); | |
4806 | rv = pack_mt_items(pe->context, pe->type, l, stream, | |
4807 | fragment_tlvs, pe, new_fragment, | |
4808 | new_fragment_arg); | |
4809 | } | |
4810 | ||
4811 | return rv; | |
4812 | } | |
4813 | ||
4814 | static int pack_tlvs(struct isis_tlvs *tlvs, struct stream *stream, | |
4815 | struct isis_tlvs *fragment_tlvs, | |
4816 | struct isis_tlvs *(*new_fragment)(struct list *l), | |
4817 | struct list *new_fragment_arg) | |
4818 | { | |
4819 | int rv; | |
4820 | ||
4821 | /* When fragmenting, don't add auth as it's already accounted for in the | |
4822 | * size we are given. */ | |
4823 | if (!fragment_tlvs) { | |
996c9314 LB |
4824 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, |
4825 | &tlvs->isis_auth, stream, NULL, NULL, NULL, | |
4826 | NULL); | |
7ef5fefc CF |
4827 | if (rv) |
4828 | return rv; | |
4829 | } | |
4830 | ||
5f77d901 CF |
4831 | rv = pack_tlv_purge_originator(tlvs->purge_originator, stream); |
4832 | if (rv) | |
4833 | return rv; | |
4834 | if (fragment_tlvs) { | |
4835 | fragment_tlvs->purge_originator = | |
4836 | copy_tlv_purge_originator(tlvs->purge_originator); | |
4837 | } | |
4838 | ||
7ef5fefc CF |
4839 | rv = pack_tlv_protocols_supported(&tlvs->protocols_supported, stream); |
4840 | if (rv) | |
4841 | return rv; | |
4842 | if (fragment_tlvs) { | |
4843 | copy_tlv_protocols_supported( | |
4844 | &tlvs->protocols_supported, | |
4845 | &fragment_tlvs->protocols_supported); | |
4846 | } | |
4847 | ||
4848 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, | |
4849 | &tlvs->area_addresses, stream, NULL, NULL, NULL, NULL); | |
4850 | if (rv) | |
4851 | return rv; | |
4852 | if (fragment_tlvs) { | |
4853 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, | |
4854 | &tlvs->area_addresses, | |
4855 | &fragment_tlvs->area_addresses); | |
4856 | } | |
4857 | ||
4858 | ||
4859 | if (tlvs->mt_router_info_empty) { | |
4860 | if (STREAM_WRITEABLE(stream) < 2) | |
4861 | return 1; | |
4862 | stream_putc(stream, ISIS_TLV_MT_ROUTER_INFO); | |
4863 | stream_putc(stream, 0); | |
4864 | if (fragment_tlvs) | |
4865 | fragment_tlvs->mt_router_info_empty = true; | |
4866 | } else { | |
4867 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
4868 | &tlvs->mt_router_info, stream, NULL, NULL, NULL, | |
4869 | NULL); | |
4870 | if (rv) | |
4871 | return rv; | |
4872 | if (fragment_tlvs) { | |
4873 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
4874 | &tlvs->mt_router_info, | |
4875 | &fragment_tlvs->mt_router_info); | |
4876 | } | |
4877 | } | |
4878 | ||
4879 | rv = pack_tlv_dynamic_hostname(tlvs->hostname, stream); | |
4880 | if (rv) | |
4881 | return rv; | |
4882 | if (fragment_tlvs) | |
4883 | fragment_tlvs->hostname = | |
4884 | copy_tlv_dynamic_hostname(tlvs->hostname); | |
4885 | ||
1b3f47d0 OD |
4886 | rv = pack_tlv_router_cap(tlvs->router_cap, stream); |
4887 | if (rv) | |
4888 | return rv; | |
4889 | if (fragment_tlvs) { | |
4890 | fragment_tlvs->router_cap = | |
4891 | copy_tlv_router_cap(tlvs->router_cap); | |
4892 | } | |
4893 | ||
7ef5fefc CF |
4894 | rv = pack_tlv_te_router_id(tlvs->te_router_id, stream); |
4895 | if (rv) | |
4896 | return rv; | |
4897 | if (fragment_tlvs) { | |
4898 | fragment_tlvs->te_router_id = | |
4899 | copy_tlv_te_router_id(tlvs->te_router_id); | |
4900 | } | |
4901 | ||
173f8887 OD |
4902 | rv = pack_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6, stream); |
4903 | if (rv) | |
4904 | return rv; | |
4905 | if (fragment_tlvs) { | |
4906 | fragment_tlvs->te_router_id_ipv6 = | |
4907 | copy_tlv_te_router_id_ipv6(tlvs->te_router_id_ipv6); | |
4908 | } | |
4909 | ||
9fe21208 CF |
4910 | rv = pack_tlv_threeway_adj(tlvs->threeway_adj, stream); |
4911 | if (rv) | |
4912 | return rv; | |
4913 | if (fragment_tlvs) { | |
4914 | fragment_tlvs->threeway_adj = | |
4915 | copy_tlv_threeway_adj(tlvs->threeway_adj); | |
4916 | } | |
4917 | ||
41a145f1 CF |
4918 | rv = pack_tlv_spine_leaf(tlvs->spine_leaf, stream); |
4919 | if (rv) | |
4920 | return rv; | |
4921 | if (fragment_tlvs) { | |
4922 | fragment_tlvs->spine_leaf = | |
4923 | copy_tlv_spine_leaf(tlvs->spine_leaf); | |
4924 | } | |
4925 | ||
7ef5fefc CF |
4926 | for (size_t pack_idx = 0; pack_idx < array_size(pack_order); |
4927 | pack_idx++) { | |
4928 | rv = handle_pack_entry(&pack_order[pack_idx], tlvs, stream, | |
4929 | fragment_tlvs ? &fragment_tlvs : NULL, | |
4930 | new_fragment, new_fragment_arg); | |
4931 | ||
4932 | if (rv) | |
4933 | return rv; | |
4934 | } | |
4935 | ||
4936 | return 0; | |
4937 | } | |
4938 | ||
4939 | int isis_pack_tlvs(struct isis_tlvs *tlvs, struct stream *stream, | |
4940 | size_t len_pointer, bool pad, bool is_lsp) | |
4941 | { | |
4942 | int rv; | |
4943 | ||
4944 | rv = pack_tlvs(tlvs, stream, NULL, NULL, NULL); | |
4945 | if (rv) | |
4946 | return rv; | |
4947 | ||
4948 | if (pad) | |
4949 | add_padding(stream); | |
4950 | ||
4951 | if (len_pointer != (size_t)-1) { | |
4952 | stream_putw_at(stream, len_pointer, stream_get_endp(stream)); | |
4953 | } | |
4954 | ||
4955 | update_auth(tlvs, stream, is_lsp); | |
4956 | ||
4957 | return 0; | |
4958 | } | |
4959 | ||
4960 | static struct isis_tlvs *new_fragment(struct list *l) | |
4961 | { | |
4962 | struct isis_tlvs *rv = isis_alloc_tlvs(); | |
4963 | ||
4964 | listnode_add(l, rv); | |
4965 | return rv; | |
4966 | } | |
4967 | ||
4968 | struct list *isis_fragment_tlvs(struct isis_tlvs *tlvs, size_t size) | |
4969 | { | |
4970 | struct stream *dummy_stream = stream_new(size); | |
4971 | struct list *rv = list_new(); | |
4972 | struct isis_tlvs *fragment_tlvs = new_fragment(rv); | |
4973 | ||
4974 | if (pack_tlvs(tlvs, dummy_stream, fragment_tlvs, new_fragment, rv)) { | |
4975 | struct listnode *node; | |
4976 | for (ALL_LIST_ELEMENTS_RO(rv, node, fragment_tlvs)) | |
4977 | isis_free_tlvs(fragment_tlvs); | |
6a154c88 | 4978 | list_delete(&rv); |
7ef5fefc CF |
4979 | } |
4980 | ||
4981 | stream_free(dummy_stream); | |
4982 | return rv; | |
4983 | } | |
4984 | ||
4985 | static int unpack_tlv_unknown(enum isis_tlv_context context, uint8_t tlv_type, | |
4986 | uint8_t tlv_len, struct stream *s, | |
4987 | struct sbuf *log, int indent) | |
4988 | { | |
4989 | stream_forward_getp(s, tlv_len); | |
4990 | sbuf_push(log, indent, | |
6cde4b45 | 4991 | "Skipping unknown TLV %hhu (%hhu bytes)\n", |
7ef5fefc CF |
4992 | tlv_type, tlv_len); |
4993 | return 0; | |
4994 | } | |
4995 | ||
4996 | static int unpack_tlv(enum isis_tlv_context context, size_t avail_len, | |
4997 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 4998 | int indent, bool *unpacked_known_tlvs) |
7ef5fefc CF |
4999 | { |
5000 | uint8_t tlv_type, tlv_len; | |
5001 | const struct tlv_ops *ops; | |
5002 | ||
5003 | sbuf_push(log, indent, "Unpacking TLV...\n"); | |
5004 | ||
5005 | if (avail_len < 2) { | |
5006 | sbuf_push( | |
5007 | log, indent + 2, | |
5008 | "Available data %zu too short to contain a TLV header.\n", | |
5009 | avail_len); | |
5010 | return 1; | |
5011 | } | |
5012 | ||
5013 | tlv_type = stream_getc(stream); | |
5014 | tlv_len = stream_getc(stream); | |
5015 | ||
5016 | sbuf_push(log, indent + 2, | |
6cde4b45 | 5017 | "Found TLV of type %hhu and len %hhu.\n", |
7ef5fefc CF |
5018 | tlv_type, tlv_len); |
5019 | ||
5020 | if (avail_len < ((size_t)tlv_len) + 2) { | |
98c5bc15 | 5021 | sbuf_push(log, indent + 2, |
6cde4b45 | 5022 | "Available data %zu too short for claimed TLV len %hhu.\n", |
98c5bc15 | 5023 | avail_len - 2, tlv_len); |
7ef5fefc CF |
5024 | return 1; |
5025 | } | |
5026 | ||
5027 | ops = tlv_table[context][tlv_type]; | |
5028 | if (ops && ops->unpack) { | |
bf555bf0 CF |
5029 | if (unpacked_known_tlvs) |
5030 | *unpacked_known_tlvs = true; | |
7ef5fefc CF |
5031 | return ops->unpack(context, tlv_type, tlv_len, stream, log, |
5032 | dest, indent + 2); | |
5033 | } | |
5034 | ||
5035 | return unpack_tlv_unknown(context, tlv_type, tlv_len, stream, log, | |
5036 | indent + 2); | |
5037 | } | |
5038 | ||
5039 | static int unpack_tlvs(enum isis_tlv_context context, size_t avail_len, | |
5040 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 5041 | int indent, bool *unpacked_known_tlvs) |
7ef5fefc CF |
5042 | { |
5043 | int rv; | |
5044 | size_t tlv_start, tlv_pos; | |
5045 | ||
5046 | tlv_start = stream_get_getp(stream); | |
5047 | tlv_pos = 0; | |
5048 | ||
5049 | sbuf_push(log, indent, "Unpacking %zu bytes of %s...\n", avail_len, | |
5050 | (context == ISIS_CONTEXT_LSP) ? "TLVs" : "sub-TLVs"); | |
5051 | ||
5052 | while (tlv_pos < avail_len) { | |
5053 | rv = unpack_tlv(context, avail_len - tlv_pos, stream, log, dest, | |
bf555bf0 | 5054 | indent + 2, unpacked_known_tlvs); |
7ef5fefc CF |
5055 | if (rv) |
5056 | return rv; | |
5057 | ||
5058 | tlv_pos = stream_get_getp(stream) - tlv_start; | |
5059 | } | |
5060 | ||
5061 | return 0; | |
5062 | } | |
5063 | ||
5064 | int isis_unpack_tlvs(size_t avail_len, struct stream *stream, | |
5065 | struct isis_tlvs **dest, const char **log) | |
5066 | { | |
5067 | static struct sbuf logbuf; | |
5068 | int indent = 0; | |
5069 | int rv; | |
5070 | struct isis_tlvs *result; | |
5071 | ||
5072 | if (!sbuf_buf(&logbuf)) | |
5073 | sbuf_init(&logbuf, NULL, 0); | |
5074 | ||
5075 | sbuf_reset(&logbuf); | |
5076 | if (avail_len > STREAM_READABLE(stream)) { | |
5077 | sbuf_push(&logbuf, indent, | |
3efd0893 | 5078 | "Stream doesn't contain sufficient data. Claimed %zu, available %zu\n", |
7ef5fefc CF |
5079 | avail_len, STREAM_READABLE(stream)); |
5080 | return 1; | |
5081 | } | |
5082 | ||
5083 | result = isis_alloc_tlvs(); | |
5084 | rv = unpack_tlvs(ISIS_CONTEXT_LSP, avail_len, stream, &logbuf, result, | |
bf555bf0 | 5085 | indent, NULL); |
7ef5fefc CF |
5086 | |
5087 | *log = sbuf_buf(&logbuf); | |
5088 | *dest = result; | |
5089 | ||
5090 | return rv; | |
5091 | } | |
5092 | ||
5093 | #define TLV_OPS(_name_, _desc_) \ | |
5094 | static const struct tlv_ops tlv_##_name_##_ops = { \ | |
5095 | .name = _desc_, .unpack = unpack_tlv_##_name_, \ | |
5096 | } | |
5097 | ||
5098 | #define ITEM_TLV_OPS(_name_, _desc_) \ | |
5099 | static const struct tlv_ops tlv_##_name_##_ops = { \ | |
5100 | .name = _desc_, \ | |
5101 | .unpack = unpack_tlv_with_items, \ | |
98c5bc15 | 5102 | \ |
7ef5fefc CF |
5103 | .pack_item = pack_item_##_name_, \ |
5104 | .free_item = free_item_##_name_, \ | |
5105 | .unpack_item = unpack_item_##_name_, \ | |
5106 | .format_item = format_item_##_name_, \ | |
5107 | .copy_item = copy_item_##_name_} | |
5108 | ||
5109 | #define SUBTLV_OPS(_name_, _desc_) \ | |
5110 | static const struct tlv_ops subtlv_##_name_##_ops = { \ | |
5111 | .name = _desc_, .unpack = unpack_subtlv_##_name_, \ | |
5112 | } | |
5113 | ||
bd507085 CF |
5114 | #define ITEM_SUBTLV_OPS(_name_, _desc_) \ |
5115 | ITEM_TLV_OPS(_name_, _desc_) | |
5116 | ||
7ef5fefc CF |
5117 | ITEM_TLV_OPS(area_address, "TLV 1 Area Addresses"); |
5118 | ITEM_TLV_OPS(oldstyle_reach, "TLV 2 IS Reachability"); | |
5119 | ITEM_TLV_OPS(lan_neighbor, "TLV 6 LAN Neighbors"); | |
5120 | ITEM_TLV_OPS(lsp_entry, "TLV 9 LSP Entries"); | |
5121 | ITEM_TLV_OPS(auth, "TLV 10 IS-IS Auth"); | |
5f77d901 | 5122 | TLV_OPS(purge_originator, "TLV 13 Purge Originator Identification"); |
7ef5fefc CF |
5123 | ITEM_TLV_OPS(extended_reach, "TLV 22 Extended Reachability"); |
5124 | ITEM_TLV_OPS(oldstyle_ip_reach, "TLV 128/130 IP Reachability"); | |
5125 | TLV_OPS(protocols_supported, "TLV 129 Protocols Supported"); | |
5126 | ITEM_TLV_OPS(ipv4_address, "TLV 132 IPv4 Interface Address"); | |
5127 | TLV_OPS(te_router_id, "TLV 134 TE Router ID"); | |
5128 | ITEM_TLV_OPS(extended_ip_reach, "TLV 135 Extended IP Reachability"); | |
5129 | TLV_OPS(dynamic_hostname, "TLV 137 Dynamic Hostname"); | |
173f8887 | 5130 | TLV_OPS(te_router_id_ipv6, "TLV 140 IPv6 TE Router ID"); |
41a145f1 | 5131 | TLV_OPS(spine_leaf, "TLV 150 Spine Leaf Extensions"); |
7ef5fefc | 5132 | ITEM_TLV_OPS(mt_router_info, "TLV 229 MT Router Information"); |
9fe21208 | 5133 | TLV_OPS(threeway_adj, "TLV 240 P2P Three-Way Adjacency"); |
7ef5fefc | 5134 | ITEM_TLV_OPS(ipv6_address, "TLV 232 IPv6 Interface Address"); |
173f8887 | 5135 | ITEM_TLV_OPS(global_ipv6_address, "TLV 233 Global IPv6 Interface Address"); |
7ef5fefc | 5136 | ITEM_TLV_OPS(ipv6_reach, "TLV 236 IPv6 Reachability"); |
1b3f47d0 | 5137 | TLV_OPS(router_cap, "TLV 242 Router Capability"); |
7ef5fefc | 5138 | |
bd507085 | 5139 | ITEM_SUBTLV_OPS(prefix_sid, "Sub-TLV 3 SR Prefix-SID"); |
7ef5fefc CF |
5140 | SUBTLV_OPS(ipv6_source_prefix, "Sub-TLV 22 IPv6 Source Prefix"); |
5141 | ||
2b64873d | 5142 | static const struct tlv_ops *const tlv_table[ISIS_CONTEXT_MAX][ISIS_TLV_MAX] = { |
98c5bc15 CF |
5143 | [ISIS_CONTEXT_LSP] = { |
5144 | [ISIS_TLV_AREA_ADDRESSES] = &tlv_area_address_ops, | |
5145 | [ISIS_TLV_OLDSTYLE_REACH] = &tlv_oldstyle_reach_ops, | |
5146 | [ISIS_TLV_LAN_NEIGHBORS] = &tlv_lan_neighbor_ops, | |
5147 | [ISIS_TLV_LSP_ENTRY] = &tlv_lsp_entry_ops, | |
5148 | [ISIS_TLV_AUTH] = &tlv_auth_ops, | |
5f77d901 | 5149 | [ISIS_TLV_PURGE_ORIGINATOR] = &tlv_purge_originator_ops, |
98c5bc15 | 5150 | [ISIS_TLV_EXTENDED_REACH] = &tlv_extended_reach_ops, |
98c5bc15 CF |
5151 | [ISIS_TLV_OLDSTYLE_IP_REACH] = &tlv_oldstyle_ip_reach_ops, |
5152 | [ISIS_TLV_PROTOCOLS_SUPPORTED] = &tlv_protocols_supported_ops, | |
5153 | [ISIS_TLV_OLDSTYLE_IP_REACH_EXT] = &tlv_oldstyle_ip_reach_ops, | |
5154 | [ISIS_TLV_IPV4_ADDRESS] = &tlv_ipv4_address_ops, | |
5155 | [ISIS_TLV_TE_ROUTER_ID] = &tlv_te_router_id_ops, | |
173f8887 | 5156 | [ISIS_TLV_TE_ROUTER_ID_IPV6] = &tlv_te_router_id_ipv6_ops, |
98c5bc15 | 5157 | [ISIS_TLV_EXTENDED_IP_REACH] = &tlv_extended_ip_reach_ops, |
98c5bc15 | 5158 | [ISIS_TLV_DYNAMIC_HOSTNAME] = &tlv_dynamic_hostname_ops, |
41a145f1 | 5159 | [ISIS_TLV_SPINE_LEAF_EXT] = &tlv_spine_leaf_ops, |
1b3f47d0 | 5160 | [ISIS_TLV_MT_REACH] = &tlv_extended_reach_ops, |
98c5bc15 CF |
5161 | [ISIS_TLV_MT_ROUTER_INFO] = &tlv_mt_router_info_ops, |
5162 | [ISIS_TLV_IPV6_ADDRESS] = &tlv_ipv6_address_ops, | |
173f8887 | 5163 | [ISIS_TLV_GLOBAL_IPV6_ADDRESS] = &tlv_global_ipv6_address_ops, |
1b3f47d0 | 5164 | [ISIS_TLV_MT_IP_REACH] = &tlv_extended_ip_reach_ops, |
98c5bc15 CF |
5165 | [ISIS_TLV_IPV6_REACH] = &tlv_ipv6_reach_ops, |
5166 | [ISIS_TLV_MT_IPV6_REACH] = &tlv_ipv6_reach_ops, | |
1b3f47d0 OD |
5167 | [ISIS_TLV_THREE_WAY_ADJ] = &tlv_threeway_adj_ops, |
5168 | [ISIS_TLV_ROUTER_CAPABILITY] = &tlv_router_cap_ops, | |
98c5bc15 | 5169 | }, |
3e300703 | 5170 | [ISIS_CONTEXT_SUBTLV_NE_REACH] = {}, |
bd507085 CF |
5171 | [ISIS_CONTEXT_SUBTLV_IP_REACH] = { |
5172 | [ISIS_SUBTLV_PREFIX_SID] = &tlv_prefix_sid_ops, | |
5173 | }, | |
98c5bc15 | 5174 | [ISIS_CONTEXT_SUBTLV_IPV6_REACH] = { |
bd507085 | 5175 | [ISIS_SUBTLV_PREFIX_SID] = &tlv_prefix_sid_ops, |
98c5bc15 CF |
5176 | [ISIS_SUBTLV_IPV6_SOURCE_PREFIX] = &subtlv_ipv6_source_prefix_ops, |
5177 | } | |
5178 | }; | |
7ef5fefc CF |
5179 | |
5180 | /* Accessor functions */ | |
5181 | ||
5182 | void isis_tlvs_add_auth(struct isis_tlvs *tlvs, struct isis_passwd *passwd) | |
5183 | { | |
5184 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth); | |
5185 | init_item_list(&tlvs->isis_auth); | |
5186 | ||
5187 | if (passwd->type == ISIS_PASSWD_TYPE_UNUSED) | |
5188 | return; | |
5189 | ||
841791b6 | 5190 | struct isis_auth *auth = XCALLOC(MTYPE_ISIS_TLV, sizeof(*auth)); |
7ef5fefc CF |
5191 | |
5192 | auth->type = passwd->type; | |
5193 | ||
5194 | auth->plength = passwd->len; | |
5195 | memcpy(auth->passwd, passwd->passwd, | |
5196 | MIN(sizeof(auth->passwd), sizeof(passwd->passwd))); | |
5197 | ||
5198 | if (auth->type == ISIS_PASSWD_TYPE_CLEARTXT) { | |
5199 | auth->length = passwd->len; | |
5200 | memcpy(auth->value, passwd->passwd, | |
5201 | MIN(sizeof(auth->value), sizeof(passwd->passwd))); | |
5202 | } | |
5203 | ||
5204 | append_item(&tlvs->isis_auth, (struct isis_item *)auth); | |
5205 | } | |
5206 | ||
5207 | void isis_tlvs_add_area_addresses(struct isis_tlvs *tlvs, | |
5208 | struct list *addresses) | |
5209 | { | |
5210 | struct listnode *node; | |
5211 | struct area_addr *area_addr; | |
5212 | ||
5213 | for (ALL_LIST_ELEMENTS_RO(addresses, node, area_addr)) { | |
5214 | struct isis_area_address *a = | |
841791b6 | 5215 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
5216 | |
5217 | a->len = area_addr->addr_len; | |
5218 | memcpy(a->addr, area_addr->area_addr, 20); | |
5219 | append_item(&tlvs->area_addresses, (struct isis_item *)a); | |
5220 | } | |
5221 | } | |
5222 | ||
5223 | void isis_tlvs_add_lan_neighbors(struct isis_tlvs *tlvs, struct list *neighbors) | |
5224 | { | |
5225 | struct listnode *node; | |
d7c0a89a | 5226 | uint8_t *snpa; |
7ef5fefc CF |
5227 | |
5228 | for (ALL_LIST_ELEMENTS_RO(neighbors, node, snpa)) { | |
5229 | struct isis_lan_neighbor *n = | |
841791b6 | 5230 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*n)); |
7ef5fefc CF |
5231 | |
5232 | memcpy(n->mac, snpa, 6); | |
5233 | append_item(&tlvs->lan_neighbor, (struct isis_item *)n); | |
5234 | } | |
5235 | } | |
5236 | ||
5237 | void isis_tlvs_set_protocols_supported(struct isis_tlvs *tlvs, | |
5238 | struct nlpids *nlpids) | |
5239 | { | |
5240 | tlvs->protocols_supported.count = nlpids->count; | |
0a22ddfb | 5241 | XFREE(MTYPE_ISIS_TLV, tlvs->protocols_supported.protocols); |
7ef5fefc CF |
5242 | if (nlpids->count) { |
5243 | tlvs->protocols_supported.protocols = | |
841791b6 | 5244 | XCALLOC(MTYPE_ISIS_TLV, nlpids->count); |
7ef5fefc CF |
5245 | memcpy(tlvs->protocols_supported.protocols, nlpids->nlpids, |
5246 | nlpids->count); | |
5247 | } else { | |
5248 | tlvs->protocols_supported.protocols = NULL; | |
5249 | } | |
5250 | } | |
5251 | ||
5252 | void isis_tlvs_add_mt_router_info(struct isis_tlvs *tlvs, uint16_t mtid, | |
5253 | bool overload, bool attached) | |
5254 | { | |
841791b6 | 5255 | struct isis_mt_router_info *i = XCALLOC(MTYPE_ISIS_TLV, sizeof(*i)); |
7ef5fefc CF |
5256 | |
5257 | i->overload = overload; | |
5258 | i->attached = attached; | |
5259 | i->mtid = mtid; | |
5260 | append_item(&tlvs->mt_router_info, (struct isis_item *)i); | |
5261 | } | |
5262 | ||
5263 | void isis_tlvs_add_ipv4_address(struct isis_tlvs *tlvs, struct in_addr *addr) | |
5264 | { | |
841791b6 | 5265 | struct isis_ipv4_address *a = XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
5266 | a->addr = *addr; |
5267 | append_item(&tlvs->ipv4_address, (struct isis_item *)a); | |
5268 | } | |
5269 | ||
5270 | ||
5271 | void isis_tlvs_add_ipv4_addresses(struct isis_tlvs *tlvs, | |
5272 | struct list *addresses) | |
5273 | { | |
5274 | struct listnode *node; | |
5275 | struct prefix_ipv4 *ip_addr; | |
bb5c77d7 | 5276 | unsigned int addr_count = 0; |
7ef5fefc | 5277 | |
bb5c77d7 | 5278 | for (ALL_LIST_ELEMENTS_RO(addresses, node, ip_addr)) { |
7ef5fefc | 5279 | isis_tlvs_add_ipv4_address(tlvs, &ip_addr->prefix); |
bb5c77d7 CF |
5280 | addr_count++; |
5281 | if (addr_count >= 63) | |
5282 | break; | |
5283 | } | |
7ef5fefc CF |
5284 | } |
5285 | ||
5286 | void isis_tlvs_add_ipv6_addresses(struct isis_tlvs *tlvs, | |
5287 | struct list *addresses) | |
5288 | { | |
5289 | struct listnode *node; | |
5290 | struct prefix_ipv6 *ip_addr; | |
1f8286c9 | 5291 | unsigned int addr_count = 0; |
7ef5fefc CF |
5292 | |
5293 | for (ALL_LIST_ELEMENTS_RO(addresses, node, ip_addr)) { | |
1f8286c9 DS |
5294 | if (addr_count >= 15) |
5295 | break; | |
5296 | ||
7ef5fefc | 5297 | struct isis_ipv6_address *a = |
841791b6 | 5298 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
5299 | |
5300 | a->addr = ip_addr->prefix; | |
5301 | append_item(&tlvs->ipv6_address, (struct isis_item *)a); | |
1f8286c9 | 5302 | addr_count++; |
7ef5fefc CF |
5303 | } |
5304 | } | |
5305 | ||
173f8887 OD |
5306 | void isis_tlvs_add_global_ipv6_addresses(struct isis_tlvs *tlvs, |
5307 | struct list *addresses) | |
5308 | { | |
5309 | struct listnode *node; | |
5310 | struct prefix_ipv6 *ip_addr; | |
5311 | unsigned int addr_count = 0; | |
5312 | ||
5313 | for (ALL_LIST_ELEMENTS_RO(addresses, node, ip_addr)) { | |
5314 | if (addr_count >= 15) | |
5315 | break; | |
5316 | ||
5317 | struct isis_ipv6_address *a = | |
5318 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); | |
5319 | ||
5320 | a->addr = ip_addr->prefix; | |
5321 | append_item(&tlvs->global_ipv6_address, (struct isis_item *)a); | |
5322 | addr_count++; | |
5323 | } | |
5324 | } | |
5325 | ||
7ef5fefc CF |
5326 | typedef bool (*auth_validator_func)(struct isis_passwd *passwd, |
5327 | struct stream *stream, | |
5328 | struct isis_auth *auth, bool is_lsp); | |
5329 | ||
5330 | static bool auth_validator_cleartxt(struct isis_passwd *passwd, | |
5331 | struct stream *stream, | |
5332 | struct isis_auth *auth, bool is_lsp) | |
5333 | { | |
5334 | return (auth->length == passwd->len | |
5335 | && !memcmp(auth->value, passwd->passwd, passwd->len)); | |
5336 | } | |
5337 | ||
5338 | static bool auth_validator_hmac_md5(struct isis_passwd *passwd, | |
5339 | struct stream *stream, | |
5340 | struct isis_auth *auth, bool is_lsp) | |
5341 | { | |
5342 | uint8_t digest[16]; | |
5343 | uint16_t checksum; | |
5344 | uint16_t rem_lifetime; | |
5345 | ||
5346 | if (is_lsp) | |
5347 | safe_auth_md5(stream, &checksum, &rem_lifetime); | |
5348 | ||
5349 | memset(STREAM_DATA(stream) + auth->offset, 0, 16); | |
6252100f MR |
5350 | #ifdef CRYPTO_OPENSSL |
5351 | uint8_t *result = (uint8_t *)HMAC(EVP_md5(), passwd->passwd, | |
5352 | passwd->len, STREAM_DATA(stream), | |
5353 | stream_get_endp(stream), NULL, NULL); | |
5354 | ||
5355 | memcpy(digest, result, 16); | |
5356 | #elif CRYPTO_INTERNAL | |
7ef5fefc CF |
5357 | hmac_md5(STREAM_DATA(stream), stream_get_endp(stream), passwd->passwd, |
5358 | passwd->len, digest); | |
6252100f | 5359 | #endif |
7ef5fefc CF |
5360 | memcpy(STREAM_DATA(stream) + auth->offset, auth->value, 16); |
5361 | ||
5362 | bool rv = !memcmp(digest, auth->value, 16); | |
5363 | ||
5364 | if (is_lsp) | |
5365 | restore_auth_md5(stream, checksum, rem_lifetime); | |
5366 | ||
5367 | return rv; | |
5368 | } | |
5369 | ||
5370 | static const auth_validator_func auth_validators[] = { | |
5371 | [ISIS_PASSWD_TYPE_CLEARTXT] = auth_validator_cleartxt, | |
5372 | [ISIS_PASSWD_TYPE_HMAC_MD5] = auth_validator_hmac_md5, | |
5373 | }; | |
5374 | ||
3380c990 EDP |
5375 | int isis_tlvs_auth_is_valid(struct isis_tlvs *tlvs, struct isis_passwd *passwd, |
5376 | struct stream *stream, bool is_lsp) | |
7ef5fefc CF |
5377 | { |
5378 | /* If no auth is set, always pass authentication */ | |
5379 | if (!passwd->type) | |
3380c990 | 5380 | return ISIS_AUTH_OK; |
7ef5fefc CF |
5381 | |
5382 | /* If we don't known how to validate the auth, return invalid */ | |
5383 | if (passwd->type >= array_size(auth_validators) | |
5384 | || !auth_validators[passwd->type]) | |
3380c990 | 5385 | return ISIS_AUTH_NO_VALIDATOR; |
7ef5fefc CF |
5386 | |
5387 | struct isis_auth *auth_head = (struct isis_auth *)tlvs->isis_auth.head; | |
5388 | struct isis_auth *auth; | |
5389 | for (auth = auth_head; auth; auth = auth->next) { | |
5390 | if (auth->type == passwd->type) | |
5391 | break; | |
5392 | } | |
5393 | ||
5394 | /* If matching auth TLV could not be found, return invalid */ | |
5395 | if (!auth) | |
3380c990 EDP |
5396 | return ISIS_AUTH_TYPE_FAILURE; |
5397 | ||
7ef5fefc CF |
5398 | |
5399 | /* Perform validation and return result */ | |
3380c990 EDP |
5400 | if (auth_validators[passwd->type](passwd, stream, auth, is_lsp)) |
5401 | return ISIS_AUTH_OK; | |
5402 | else | |
5403 | return ISIS_AUTH_FAILURE; | |
7ef5fefc CF |
5404 | } |
5405 | ||
5406 | bool isis_tlvs_area_addresses_match(struct isis_tlvs *tlvs, | |
5407 | struct list *addresses) | |
5408 | { | |
5409 | struct isis_area_address *addr_head; | |
5410 | ||
5411 | addr_head = (struct isis_area_address *)tlvs->area_addresses.head; | |
5412 | for (struct isis_area_address *addr = addr_head; addr; | |
5413 | addr = addr->next) { | |
5414 | struct listnode *node; | |
5415 | struct area_addr *a; | |
5416 | ||
5417 | for (ALL_LIST_ELEMENTS_RO(addresses, node, a)) { | |
5418 | if (a->addr_len == addr->len | |
5419 | && !memcmp(a->area_addr, addr->addr, addr->len)) | |
5420 | return true; | |
5421 | } | |
5422 | } | |
5423 | ||
5424 | return false; | |
5425 | } | |
5426 | ||
5427 | static void tlvs_area_addresses_to_adj(struct isis_tlvs *tlvs, | |
5428 | struct isis_adjacency *adj, | |
5429 | bool *changed) | |
5430 | { | |
5431 | if (adj->area_address_count != tlvs->area_addresses.count) { | |
033c6d28 DS |
5432 | uint32_t oc = adj->area_address_count; |
5433 | ||
7ef5fefc CF |
5434 | *changed = true; |
5435 | adj->area_address_count = tlvs->area_addresses.count; | |
5436 | adj->area_addresses = XREALLOC( | |
5437 | MTYPE_ISIS_ADJACENCY_INFO, adj->area_addresses, | |
5438 | adj->area_address_count * sizeof(*adj->area_addresses)); | |
033c6d28 DS |
5439 | |
5440 | for (; oc < adj->area_address_count; oc++) { | |
5441 | adj->area_addresses[oc].addr_len = 0; | |
5442 | memset(&adj->area_addresses[oc].area_addr, 0, | |
5443 | sizeof(adj->area_addresses[oc].area_addr)); | |
5444 | } | |
7ef5fefc CF |
5445 | } |
5446 | ||
5447 | struct isis_area_address *addr = NULL; | |
5448 | for (unsigned int i = 0; i < tlvs->area_addresses.count; i++) { | |
5449 | if (!addr) | |
5450 | addr = (struct isis_area_address *) | |
5451 | tlvs->area_addresses.head; | |
5452 | else | |
5453 | addr = addr->next; | |
5454 | ||
5455 | if (adj->area_addresses[i].addr_len == addr->len | |
5456 | && !memcmp(adj->area_addresses[i].area_addr, addr->addr, | |
5457 | addr->len)) { | |
5458 | continue; | |
5459 | } | |
5460 | ||
5461 | *changed = true; | |
5462 | adj->area_addresses[i].addr_len = addr->len; | |
5463 | memcpy(adj->area_addresses[i].area_addr, addr->addr, addr->len); | |
5464 | } | |
5465 | } | |
5466 | ||
5467 | static void tlvs_protocols_supported_to_adj(struct isis_tlvs *tlvs, | |
5468 | struct isis_adjacency *adj, | |
5469 | bool *changed) | |
5470 | { | |
5471 | bool ipv4_supported = false, ipv6_supported = false; | |
5472 | ||
5473 | for (uint8_t i = 0; i < tlvs->protocols_supported.count; i++) { | |
5474 | if (tlvs->protocols_supported.protocols[i] == NLPID_IP) | |
5475 | ipv4_supported = true; | |
5476 | if (tlvs->protocols_supported.protocols[i] == NLPID_IPV6) | |
5477 | ipv6_supported = true; | |
5478 | } | |
5479 | ||
3e300703 | 5480 | struct nlpids reduced = {}; |
7ef5fefc CF |
5481 | |
5482 | if (ipv4_supported && ipv6_supported) { | |
5483 | reduced.count = 2; | |
5484 | reduced.nlpids[0] = NLPID_IP; | |
5485 | reduced.nlpids[1] = NLPID_IPV6; | |
5486 | } else if (ipv4_supported) { | |
5487 | reduced.count = 1; | |
5488 | reduced.nlpids[0] = NLPID_IP; | |
5489 | } else if (ipv6_supported) { | |
5490 | reduced.count = 1; | |
4773e4f8 | 5491 | reduced.nlpids[0] = NLPID_IPV6; |
7ef5fefc CF |
5492 | } else { |
5493 | reduced.count = 0; | |
5494 | } | |
5495 | ||
5496 | if (adj->nlpids.count == reduced.count | |
5497 | && !memcmp(adj->nlpids.nlpids, reduced.nlpids, reduced.count)) | |
5498 | return; | |
5499 | ||
5500 | *changed = true; | |
5501 | adj->nlpids.count = reduced.count; | |
5502 | memcpy(adj->nlpids.nlpids, reduced.nlpids, reduced.count); | |
5503 | } | |
5504 | ||
173f8887 OD |
5505 | DEFINE_HOOK(isis_adj_ip_enabled_hook, |
5506 | (struct isis_adjacency * adj, int family, bool global), | |
5507 | (adj, family, global)); | |
30563683 | 5508 | DEFINE_HOOK(isis_adj_ip_disabled_hook, |
173f8887 OD |
5509 | (struct isis_adjacency * adj, int family, bool global), |
5510 | (adj, family, global)); | |
30563683 | 5511 | |
7ef5fefc CF |
5512 | static void tlvs_ipv4_addresses_to_adj(struct isis_tlvs *tlvs, |
5513 | struct isis_adjacency *adj, | |
5514 | bool *changed) | |
5515 | { | |
30563683 RW |
5516 | bool ipv4_enabled = false; |
5517 | ||
5518 | if (adj->ipv4_address_count == 0 && tlvs->ipv4_address.count > 0) | |
5519 | ipv4_enabled = true; | |
5520 | else if (adj->ipv4_address_count > 0 && tlvs->ipv4_address.count == 0) | |
173f8887 | 5521 | hook_call(isis_adj_ip_disabled_hook, adj, AF_INET, false); |
30563683 | 5522 | |
7ef5fefc | 5523 | if (adj->ipv4_address_count != tlvs->ipv4_address.count) { |
033c6d28 DS |
5524 | uint32_t oc = adj->ipv4_address_count; |
5525 | ||
7ef5fefc CF |
5526 | *changed = true; |
5527 | adj->ipv4_address_count = tlvs->ipv4_address.count; | |
5528 | adj->ipv4_addresses = XREALLOC( | |
5529 | MTYPE_ISIS_ADJACENCY_INFO, adj->ipv4_addresses, | |
5530 | adj->ipv4_address_count * sizeof(*adj->ipv4_addresses)); | |
033c6d28 DS |
5531 | |
5532 | for (; oc < adj->ipv4_address_count; oc++) { | |
5533 | memset(&adj->ipv4_addresses[oc], 0, | |
5534 | sizeof(adj->ipv4_addresses[oc])); | |
5535 | } | |
7ef5fefc CF |
5536 | } |
5537 | ||
5538 | struct isis_ipv4_address *addr = NULL; | |
5539 | for (unsigned int i = 0; i < tlvs->ipv4_address.count; i++) { | |
5540 | if (!addr) | |
5541 | addr = (struct isis_ipv4_address *) | |
5542 | tlvs->ipv4_address.head; | |
5543 | else | |
5544 | addr = addr->next; | |
5545 | ||
5546 | if (!memcmp(&adj->ipv4_addresses[i], &addr->addr, | |
5547 | sizeof(addr->addr))) | |
5548 | continue; | |
5549 | ||
5550 | *changed = true; | |
5551 | adj->ipv4_addresses[i] = addr->addr; | |
5552 | } | |
30563683 RW |
5553 | |
5554 | if (ipv4_enabled) | |
173f8887 | 5555 | hook_call(isis_adj_ip_enabled_hook, adj, AF_INET, false); |
7ef5fefc CF |
5556 | } |
5557 | ||
5558 | static void tlvs_ipv6_addresses_to_adj(struct isis_tlvs *tlvs, | |
5559 | struct isis_adjacency *adj, | |
5560 | bool *changed) | |
5561 | { | |
30563683 RW |
5562 | bool ipv6_enabled = false; |
5563 | ||
173f8887 | 5564 | if (adj->ll_ipv6_count == 0 && tlvs->ipv6_address.count > 0) |
30563683 | 5565 | ipv6_enabled = true; |
173f8887 OD |
5566 | else if (adj->ll_ipv6_count > 0 && tlvs->ipv6_address.count == 0) |
5567 | hook_call(isis_adj_ip_disabled_hook, adj, AF_INET6, false); | |
30563683 | 5568 | |
173f8887 OD |
5569 | if (adj->ll_ipv6_count != tlvs->ipv6_address.count) { |
5570 | uint32_t oc = adj->ll_ipv6_count; | |
033c6d28 | 5571 | |
7ef5fefc | 5572 | *changed = true; |
173f8887 OD |
5573 | adj->ll_ipv6_count = tlvs->ipv6_address.count; |
5574 | adj->ll_ipv6_addrs = XREALLOC( | |
5575 | MTYPE_ISIS_ADJACENCY_INFO, adj->ll_ipv6_addrs, | |
5576 | adj->ll_ipv6_count * sizeof(*adj->ll_ipv6_addrs)); | |
5577 | ||
5578 | for (; oc < adj->ll_ipv6_count; oc++) { | |
5579 | memset(&adj->ll_ipv6_addrs[oc], 0, | |
5580 | sizeof(adj->ll_ipv6_addrs[oc])); | |
033c6d28 | 5581 | } |
7ef5fefc CF |
5582 | } |
5583 | ||
5584 | struct isis_ipv6_address *addr = NULL; | |
5585 | for (unsigned int i = 0; i < tlvs->ipv6_address.count; i++) { | |
5586 | if (!addr) | |
5587 | addr = (struct isis_ipv6_address *) | |
5588 | tlvs->ipv6_address.head; | |
5589 | else | |
5590 | addr = addr->next; | |
5591 | ||
173f8887 | 5592 | if (!memcmp(&adj->ll_ipv6_addrs[i], &addr->addr, |
7ef5fefc CF |
5593 | sizeof(addr->addr))) |
5594 | continue; | |
5595 | ||
5596 | *changed = true; | |
173f8887 | 5597 | adj->ll_ipv6_addrs[i] = addr->addr; |
7ef5fefc | 5598 | } |
30563683 RW |
5599 | |
5600 | if (ipv6_enabled) | |
173f8887 OD |
5601 | hook_call(isis_adj_ip_enabled_hook, adj, AF_INET6, false); |
5602 | } | |
5603 | ||
5604 | ||
5605 | static void tlvs_global_ipv6_addresses_to_adj(struct isis_tlvs *tlvs, | |
5606 | struct isis_adjacency *adj, | |
5607 | bool *changed) | |
5608 | { | |
5609 | bool global_ipv6_enabled = false; | |
5610 | ||
5611 | if (adj->global_ipv6_count == 0 && tlvs->global_ipv6_address.count > 0) | |
5612 | global_ipv6_enabled = true; | |
5613 | else if (adj->global_ipv6_count > 0 | |
5614 | && tlvs->global_ipv6_address.count == 0) | |
5615 | hook_call(isis_adj_ip_disabled_hook, adj, AF_INET6, true); | |
5616 | ||
5617 | if (adj->global_ipv6_count != tlvs->global_ipv6_address.count) { | |
5618 | uint32_t oc = adj->global_ipv6_count; | |
5619 | ||
5620 | *changed = true; | |
5621 | adj->global_ipv6_count = tlvs->global_ipv6_address.count; | |
5622 | adj->global_ipv6_addrs = XREALLOC( | |
5623 | MTYPE_ISIS_ADJACENCY_INFO, adj->global_ipv6_addrs, | |
5624 | adj->global_ipv6_count | |
5625 | * sizeof(*adj->global_ipv6_addrs)); | |
5626 | ||
5627 | for (; oc < adj->global_ipv6_count; oc++) { | |
5628 | memset(&adj->global_ipv6_addrs[oc], 0, | |
5629 | sizeof(adj->global_ipv6_addrs[oc])); | |
5630 | } | |
5631 | } | |
5632 | ||
5633 | struct isis_ipv6_address *addr = NULL; | |
5634 | for (unsigned int i = 0; i < tlvs->global_ipv6_address.count; i++) { | |
5635 | if (!addr) | |
5636 | addr = (struct isis_ipv6_address *) | |
5637 | tlvs->global_ipv6_address.head; | |
5638 | else | |
5639 | addr = addr->next; | |
5640 | ||
5641 | if (!memcmp(&adj->global_ipv6_addrs[i], &addr->addr, | |
5642 | sizeof(addr->addr))) | |
5643 | continue; | |
5644 | ||
5645 | *changed = true; | |
5646 | adj->global_ipv6_addrs[i] = addr->addr; | |
5647 | } | |
5648 | ||
5649 | if (global_ipv6_enabled) | |
5650 | hook_call(isis_adj_ip_enabled_hook, adj, AF_INET6, true); | |
7ef5fefc CF |
5651 | } |
5652 | ||
5653 | void isis_tlvs_to_adj(struct isis_tlvs *tlvs, struct isis_adjacency *adj, | |
5654 | bool *changed) | |
5655 | { | |
5656 | *changed = false; | |
5657 | ||
5658 | tlvs_area_addresses_to_adj(tlvs, adj, changed); | |
5659 | tlvs_protocols_supported_to_adj(tlvs, adj, changed); | |
5660 | tlvs_ipv4_addresses_to_adj(tlvs, adj, changed); | |
5661 | tlvs_ipv6_addresses_to_adj(tlvs, adj, changed); | |
173f8887 | 5662 | tlvs_global_ipv6_addresses_to_adj(tlvs, adj, changed); |
7ef5fefc CF |
5663 | } |
5664 | ||
5665 | bool isis_tlvs_own_snpa_found(struct isis_tlvs *tlvs, uint8_t *snpa) | |
5666 | { | |
5667 | struct isis_lan_neighbor *ne_head; | |
5668 | ||
5669 | ne_head = (struct isis_lan_neighbor *)tlvs->lan_neighbor.head; | |
5670 | for (struct isis_lan_neighbor *ne = ne_head; ne; ne = ne->next) { | |
5671 | if (!memcmp(ne->mac, snpa, ETH_ALEN)) | |
5672 | return true; | |
5673 | } | |
5674 | ||
5675 | return false; | |
5676 | } | |
5677 | ||
5678 | void isis_tlvs_add_lsp_entry(struct isis_tlvs *tlvs, struct isis_lsp *lsp) | |
5679 | { | |
841791b6 | 5680 | struct isis_lsp_entry *entry = XCALLOC(MTYPE_ISIS_TLV, sizeof(*entry)); |
7ef5fefc CF |
5681 | |
5682 | entry->rem_lifetime = lsp->hdr.rem_lifetime; | |
5683 | memcpy(entry->id, lsp->hdr.lsp_id, ISIS_SYS_ID_LEN + 2); | |
5684 | entry->checksum = lsp->hdr.checksum; | |
5685 | entry->seqno = lsp->hdr.seqno; | |
5686 | entry->lsp = lsp; | |
5687 | ||
5688 | append_item(&tlvs->lsp_entries, (struct isis_item *)entry); | |
5689 | } | |
5690 | ||
5691 | void isis_tlvs_add_csnp_entries(struct isis_tlvs *tlvs, uint8_t *start_id, | |
5692 | uint8_t *stop_id, uint16_t num_lsps, | |
4bef0ec4 DL |
5693 | struct lspdb_head *head, |
5694 | struct isis_lsp **last_lsp) | |
7ef5fefc | 5695 | { |
4bef0ec4 DL |
5696 | struct isis_lsp searchfor; |
5697 | struct isis_lsp *first, *lsp; | |
5698 | ||
5699 | memcpy(&searchfor.hdr.lsp_id, start_id, sizeof(searchfor.hdr.lsp_id)); | |
5700 | first = lspdb_find_gteq(head, &searchfor); | |
7ef5fefc CF |
5701 | if (!first) |
5702 | return; | |
5703 | ||
81fddbe7 | 5704 | frr_each_from (lspdb, head, lsp, first) { |
4bef0ec4 DL |
5705 | if (memcmp(lsp->hdr.lsp_id, stop_id, sizeof(lsp->hdr.lsp_id)) |
5706 | > 0 || tlvs->lsp_entries.count == num_lsps) | |
7ef5fefc | 5707 | break; |
4bef0ec4 DL |
5708 | |
5709 | isis_tlvs_add_lsp_entry(tlvs, lsp); | |
5710 | *last_lsp = lsp; | |
7ef5fefc CF |
5711 | } |
5712 | } | |
5713 | ||
5714 | void isis_tlvs_set_dynamic_hostname(struct isis_tlvs *tlvs, | |
5715 | const char *hostname) | |
5716 | { | |
841791b6 | 5717 | XFREE(MTYPE_ISIS_TLV, tlvs->hostname); |
7ef5fefc | 5718 | if (hostname) |
841791b6 | 5719 | tlvs->hostname = XSTRDUP(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
5720 | } |
5721 | ||
1b3f47d0 OD |
5722 | /* Set Router Capability TLV parameters */ |
5723 | void isis_tlvs_set_router_capability(struct isis_tlvs *tlvs, | |
5724 | const struct isis_router_cap *cap) | |
5725 | { | |
5726 | XFREE(MTYPE_ISIS_TLV, tlvs->router_cap); | |
5727 | if (!cap) | |
5728 | return; | |
5729 | ||
5730 | tlvs->router_cap = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->router_cap)); | |
5731 | *tlvs->router_cap = *cap; | |
5732 | } | |
5733 | ||
7ef5fefc CF |
5734 | void isis_tlvs_set_te_router_id(struct isis_tlvs *tlvs, |
5735 | const struct in_addr *id) | |
5736 | { | |
841791b6 | 5737 | XFREE(MTYPE_ISIS_TLV, tlvs->te_router_id); |
7ef5fefc CF |
5738 | if (!id) |
5739 | return; | |
841791b6 | 5740 | tlvs->te_router_id = XCALLOC(MTYPE_ISIS_TLV, sizeof(*id)); |
7ef5fefc CF |
5741 | memcpy(tlvs->te_router_id, id, sizeof(*id)); |
5742 | } | |
5743 | ||
173f8887 OD |
5744 | void isis_tlvs_set_te_router_id_ipv6(struct isis_tlvs *tlvs, |
5745 | const struct in6_addr *id) | |
5746 | { | |
5747 | XFREE(MTYPE_ISIS_TLV, tlvs->te_router_id_ipv6); | |
5748 | if (!id) | |
5749 | return; | |
5750 | tlvs->te_router_id_ipv6 = XCALLOC(MTYPE_ISIS_TLV, sizeof(*id)); | |
5751 | memcpy(tlvs->te_router_id_ipv6, id, sizeof(*id)); | |
5752 | } | |
5753 | ||
7ef5fefc CF |
5754 | void isis_tlvs_add_oldstyle_ip_reach(struct isis_tlvs *tlvs, |
5755 | struct prefix_ipv4 *dest, uint8_t metric) | |
5756 | { | |
841791b6 | 5757 | struct isis_oldstyle_ip_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
5758 | |
5759 | r->metric = metric; | |
5760 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
5761 | apply_mask_ipv4(&r->prefix); | |
5762 | append_item(&tlvs->oldstyle_ip_reach, (struct isis_item *)r); | |
5763 | } | |
5764 | ||
f2333421 | 5765 | /* Add IS-IS SR Adjacency-SID subTLVs */ |
1b3f47d0 OD |
5766 | void isis_tlvs_add_adj_sid(struct isis_ext_subtlvs *exts, |
5767 | struct isis_adj_sid *adj) | |
5768 | { | |
5769 | append_item(&exts->adj_sid, (struct isis_item *)adj); | |
5770 | SET_SUBTLV(exts, EXT_ADJ_SID); | |
5771 | } | |
5772 | ||
f2333421 | 5773 | /* Delete IS-IS SR Adjacency-SID subTLVs */ |
1b3f47d0 OD |
5774 | void isis_tlvs_del_adj_sid(struct isis_ext_subtlvs *exts, |
5775 | struct isis_adj_sid *adj) | |
5776 | { | |
5777 | delete_item(&exts->adj_sid, (struct isis_item *)adj); | |
5778 | XFREE(MTYPE_ISIS_SUBTLV, adj); | |
5779 | if (exts->adj_sid.count == 0) | |
5780 | UNSET_SUBTLV(exts, EXT_ADJ_SID); | |
5781 | } | |
5782 | ||
f2333421 | 5783 | /* Add IS-IS SR LAN-Adjacency-SID subTLVs */ |
1b3f47d0 OD |
5784 | void isis_tlvs_add_lan_adj_sid(struct isis_ext_subtlvs *exts, |
5785 | struct isis_lan_adj_sid *lan) | |
5786 | { | |
5787 | append_item(&exts->lan_sid, (struct isis_item *)lan); | |
5788 | SET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
5789 | } | |
5790 | ||
f2333421 | 5791 | /* Delete IS-IS SR LAN-Adjacency-SID subTLVs */ |
1b3f47d0 OD |
5792 | void isis_tlvs_del_lan_adj_sid(struct isis_ext_subtlvs *exts, |
5793 | struct isis_lan_adj_sid *lan) | |
5794 | { | |
5795 | delete_item(&exts->lan_sid, (struct isis_item *)lan); | |
5796 | XFREE(MTYPE_ISIS_SUBTLV, lan); | |
5797 | if (exts->lan_sid.count == 0) | |
5798 | UNSET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
5799 | } | |
5800 | ||
7ef5fefc | 5801 | void isis_tlvs_add_extended_ip_reach(struct isis_tlvs *tlvs, |
26f6acaf RW |
5802 | struct prefix_ipv4 *dest, uint32_t metric, |
5803 | bool external, struct sr_prefix_cfg *pcfg) | |
7ef5fefc | 5804 | { |
841791b6 | 5805 | struct isis_extended_ip_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
5806 | |
5807 | r->metric = metric; | |
5808 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
5809 | apply_mask_ipv4(&r->prefix); | |
26f6acaf RW |
5810 | if (pcfg) { |
5811 | struct isis_prefix_sid *psid = | |
5812 | XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*psid)); | |
5813 | ||
5814 | isis_sr_prefix_cfg2subtlv(pcfg, external, psid); | |
5815 | r->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IP_REACH); | |
5816 | append_item(&r->subtlvs->prefix_sids, (struct isis_item *)psid); | |
5817 | } | |
7ef5fefc CF |
5818 | append_item(&tlvs->extended_ip_reach, (struct isis_item *)r); |
5819 | } | |
5820 | ||
5821 | void isis_tlvs_add_ipv6_reach(struct isis_tlvs *tlvs, uint16_t mtid, | |
26f6acaf RW |
5822 | struct prefix_ipv6 *dest, uint32_t metric, |
5823 | bool external, struct sr_prefix_cfg *pcfg) | |
7ef5fefc | 5824 | { |
841791b6 | 5825 | struct isis_ipv6_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
5826 | |
5827 | r->metric = metric; | |
5828 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
5829 | apply_mask_ipv6(&r->prefix); | |
26f6acaf RW |
5830 | if (pcfg) { |
5831 | struct isis_prefix_sid *psid = | |
5832 | XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*psid)); | |
5833 | ||
5834 | isis_sr_prefix_cfg2subtlv(pcfg, external, psid); | |
5835 | r->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IP_REACH); | |
5836 | append_item(&r->subtlvs->prefix_sids, (struct isis_item *)psid); | |
5837 | } | |
7ef5fefc CF |
5838 | |
5839 | struct isis_item_list *l; | |
5840 | l = (mtid == ISIS_MT_IPV4_UNICAST) | |
5841 | ? &tlvs->ipv6_reach | |
5842 | : isis_get_mt_items(&tlvs->mt_ipv6_reach, mtid); | |
5843 | append_item(l, (struct isis_item *)r); | |
5844 | } | |
5845 | ||
d43d2df5 CF |
5846 | void isis_tlvs_add_ipv6_dstsrc_reach(struct isis_tlvs *tlvs, uint16_t mtid, |
5847 | struct prefix_ipv6 *dest, | |
5848 | struct prefix_ipv6 *src, | |
5849 | uint32_t metric) | |
5850 | { | |
26f6acaf | 5851 | isis_tlvs_add_ipv6_reach(tlvs, mtid, dest, metric, false, NULL); |
d43d2df5 CF |
5852 | struct isis_item_list *l = isis_get_mt_items(&tlvs->mt_ipv6_reach, |
5853 | mtid); | |
5854 | ||
5855 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach*)last_item(l); | |
bd507085 | 5856 | r->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH); |
d43d2df5 CF |
5857 | r->subtlvs->source_prefix = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*src)); |
5858 | memcpy(r->subtlvs->source_prefix, src, sizeof(*src)); | |
5859 | } | |
5860 | ||
7ef5fefc CF |
5861 | void isis_tlvs_add_oldstyle_reach(struct isis_tlvs *tlvs, uint8_t *id, |
5862 | uint8_t metric) | |
5863 | { | |
841791b6 | 5864 | struct isis_oldstyle_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
5865 | |
5866 | r->metric = metric; | |
5867 | memcpy(r->id, id, sizeof(r->id)); | |
5868 | append_item(&tlvs->oldstyle_reach, (struct isis_item *)r); | |
5869 | } | |
5870 | ||
5871 | void isis_tlvs_add_extended_reach(struct isis_tlvs *tlvs, uint16_t mtid, | |
5872 | uint8_t *id, uint32_t metric, | |
1b3f47d0 | 5873 | struct isis_ext_subtlvs *exts) |
7ef5fefc | 5874 | { |
841791b6 | 5875 | struct isis_extended_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
5876 | |
5877 | memcpy(r->id, id, sizeof(r->id)); | |
5878 | r->metric = metric; | |
1b3f47d0 OD |
5879 | if (exts) |
5880 | r->subtlvs = copy_item_ext_subtlvs(exts, mtid); | |
7ef5fefc CF |
5881 | |
5882 | struct isis_item_list *l; | |
173f8887 | 5883 | if ((mtid == ISIS_MT_IPV4_UNICAST) || (mtid == ISIS_MT_DISABLE)) |
7ef5fefc CF |
5884 | l = &tlvs->extended_reach; |
5885 | else | |
5886 | l = isis_get_mt_items(&tlvs->mt_reach, mtid); | |
5887 | append_item(l, (struct isis_item *)r); | |
5888 | } | |
5889 | ||
9fe21208 CF |
5890 | void isis_tlvs_add_threeway_adj(struct isis_tlvs *tlvs, |
5891 | enum isis_threeway_state state, | |
5892 | uint32_t local_circuit_id, | |
5893 | const uint8_t *neighbor_id, | |
5894 | uint32_t neighbor_circuit_id) | |
5895 | { | |
5896 | assert(!tlvs->threeway_adj); | |
5897 | ||
5898 | tlvs->threeway_adj = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->threeway_adj)); | |
5899 | tlvs->threeway_adj->state = state; | |
5900 | tlvs->threeway_adj->local_circuit_id = local_circuit_id; | |
5901 | ||
5902 | if (neighbor_id) { | |
5903 | tlvs->threeway_adj->neighbor_set = true; | |
5904 | memcpy(tlvs->threeway_adj->neighbor_id, neighbor_id, 6); | |
5905 | tlvs->threeway_adj->neighbor_circuit_id = neighbor_circuit_id; | |
5906 | } | |
5907 | } | |
5908 | ||
41a145f1 CF |
5909 | void isis_tlvs_add_spine_leaf(struct isis_tlvs *tlvs, uint8_t tier, |
5910 | bool has_tier, bool is_leaf, bool is_spine, | |
5911 | bool is_backup) | |
5912 | { | |
5913 | assert(!tlvs->spine_leaf); | |
5914 | ||
5915 | tlvs->spine_leaf = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->spine_leaf)); | |
5916 | ||
5917 | if (has_tier) { | |
5918 | tlvs->spine_leaf->tier = tier; | |
5919 | } | |
5920 | ||
5921 | tlvs->spine_leaf->has_tier = has_tier; | |
5922 | tlvs->spine_leaf->is_leaf = is_leaf; | |
5923 | tlvs->spine_leaf->is_spine = is_spine; | |
5924 | tlvs->spine_leaf->is_backup = is_backup; | |
5925 | } | |
5926 | ||
7ef5fefc CF |
5927 | struct isis_mt_router_info * |
5928 | isis_tlvs_lookup_mt_router_info(struct isis_tlvs *tlvs, uint16_t mtid) | |
5929 | { | |
df2c1f3d | 5930 | if (!tlvs || tlvs->mt_router_info_empty) |
7ef5fefc CF |
5931 | return NULL; |
5932 | ||
5933 | struct isis_mt_router_info *rv; | |
5934 | for (rv = (struct isis_mt_router_info *)tlvs->mt_router_info.head; rv; | |
5935 | rv = rv->next) { | |
5936 | if (rv->mtid == mtid) | |
5937 | return rv; | |
5938 | } | |
5939 | ||
5940 | return NULL; | |
5941 | } | |
2c92bee4 CF |
5942 | |
5943 | void isis_tlvs_set_purge_originator(struct isis_tlvs *tlvs, | |
5944 | const uint8_t *generator, | |
5945 | const uint8_t *sender) | |
5946 | { | |
5947 | assert(!tlvs->purge_originator); | |
5948 | ||
5949 | tlvs->purge_originator = XCALLOC(MTYPE_ISIS_TLV, | |
5950 | sizeof(*tlvs->purge_originator)); | |
5951 | memcpy(tlvs->purge_originator->generator, generator, | |
5952 | sizeof(tlvs->purge_originator->generator)); | |
5953 | if (sender) { | |
5954 | tlvs->purge_originator->sender_set = true; | |
5955 | memcpy(tlvs->purge_originator->sender, sender, | |
5956 | sizeof(tlvs->purge_originator->sender)); | |
5957 | } | |
5958 | } |